pro - Toptica

Tunable 

Diode Lasers 

FemtoFiber ® 

Lasers for Scientifi c Challenges 

Lasers 

Catalog 2009 / 2010 

Frequency Converted 

Lasers 

Photonicals TM Single-Mode 

Diode Lasers 

A Passion for Precision. 

Ultrafast Fiber Lasers

Tunable Diode Lasers 

Tunable diode lasers ............... 4 

FP / AR diodes ........................... 5 

DFB / DBR diodes ..................... 5 

Littrow and Littman .................... 6 

pro technologie ........................... 8 

DL pro ........................................ 9 

DL 100 ..................................... 11 

DL DFB .................................... 12 

High power diode lasers ...... 16 

TA pro, TA 100, TA DFB ........... 17 

DLX .......................................... 19 

BoosTA .................................... 20 

Frequency converted lasers .. 22 

SHG pro ................................... 24 

DL-SHG pro ............................. 25 

TA-SHG pro ............................. 26 

TA-FHG pro .............................. 27 

Customized systems ................ 28 

2 www.toptica.com 


Lasers for 

Scientifi c Challenges 

Laboratory Electronics 

Laboratory electronics .............. 30 

SYS DC 110 series .................. 32 

DCC 110, DTC 110 .................. 33 

SC 110, DCB 110 .................... 33 

PID 110, LIR 110 ..................... 34 

PDD 110 .................................. 35 

FALC 110 ................................. 36 

DigiLock 110 ............................ 37 

LCC ......................................... 40 

LaseLock ................................. 41 

iScan ........................................ 42 

Laboratory Tools 

Laser diodes ............................ 44 

ColdPack ................................. 45 

APP J ....................................... 46 

Optical isolators ........................ 47 

FiberDock TM , FiberOut .............. 48 

FPI 100 .................................... 49 

miniScan 102 ........................... 51 

Wavelength meters ................... 52 

CoSy ........................................ 54 

Spectroscopy cells ................... 55 

Multipass cell ............................ 56 

VFG 150 ................................... 57

Single-Mode Diode Lasers 

Single-mode diode lasers ......... 58 

iBeam, iPulse ........................... 59 

iWave, BlueMode ..................... 60 

dfBeam, XTRA ......................... 61 

Ultrafast Fiber Lasers 

Ultrafast fiber lasers .................. 62 

FFS .......................................... 63 

iChrome TM ................................. 67 

FemtoFiber pro ......................... 67 

Terahertz Generation 

Terahertz technology ................. 68 

Laser packages (pulsed & cw) .. 69 

cw terahertz spectroscopy kit .. 70 

Please note: Specifi cations are subject to change without further notice. 


Pages 4 - 21 

Frequency Converted Lasers 

Pages 22 - 29 

Photonicals TM 

Pages 30 - 43 Laboratory Electronics 

Pages 44 - 57 Laboratory Tools 


Pages 58 - 61 


Pages 62 - 67 


Pages 68 - 70 

www.toptica.com 3

Tunable 

Diode Lasers 

Turning Laser Diodes into 

Diode Lasers 

Laser diodes 

Laser diodes are well established in a 

variety of consumer products, like laser 

pointers, barcode scanners, or CD/DVD/ 

Blu-ray drives. The success story of these 

light sources is driven by the fact that they 

are compact, conveniently operated, cost 

effective, and highly effi cient. However, the 

emission spectrum of bare laser diodes is 

broad, and the lasing wavelength is not well 

defi ned. The lasing modes are determined 

by the two facets of the laser diode. The wide 

gain profi le of the semiconductor causes 

many modes to oscillate simultaneously, 

each with a different frequency. 

Even diodes with a single longitudinal 

mode exhibit mode-hopping upon slightest 

variations of the chip temperature or driver 

current. The result is an imperfect, spectrally 

unstable output beam that does not meet 

the demands of many scientifi c or industrial 

applications. 


Mode selection 

Requirements for advanced measurement 

tasks include a narrow emission linewidth, 

large coherence length, precise wavelength 

selection, and tuning or even stabilization 

of the emission frequency. These superior 

characteristics are achieved by introducing 

an additional frequency-selective element 

into the laser cavity. Precise temperature 

and current control are a must. 

TOPTICA offers two realizations of tunable 

single-frequency diode lasers. Both make 

use of grating structures to select and 

control the emission frequency. One is 

a grating stabilized external cavity diode 

laser (ECDL), which incorporates an optical 

grating mounted in front of the laser diode. 

The other approach features laser diodes 

with gratings built into the semiconductor 

itself. Two versions of these diodes are used: 

distributed feedback (DFB) and distributed 

Bragg refl ector (DBR) laser diodes (page 5). 

Wavelength tuning of an ECDL 

In an ECDL, a second resonator is formed 

between the diode's back facet and the 

feedback elements. The grating fi lter, 

together with the semiconductor gain profi le 

determines the new external lasing mode. 

To control the wavelength of an ECDL, the 

angle of the grating is changed, shifting 

its spectral fi lter and at the same time 

moving the external mode structure of the 

laser. A large mode-hop free tuning range 

results from accurate synchronization of 

the two effects. This can be realized by a 

properly selected pivot point for the grating 

movement. Coarse wavelength alignment 

is often realized with a micrometer screw, 

automated tuning with a Piezo actuator. 

By adding a suitable grating, collimation 

optics and control electronics, a simple laser 

diode can be transformed into a complete, 

tunable diode laser system.

Fabry-Perot and Anti-Refl ection 

Coated Laser Diodes 

FP diodes — high power at a low cost 

In TOPTICA's DL 100, an ECDL in Littrow 

design, both Fabry-Perot (FP) diodes and 

anti refl ection coated (AR) diodes can 

be used. FP diodes are mass-produced, 

available at numerous wavelengths, and are 

optimized for maximum output powers. In 

addition, they are relatively cheap. With FP 

diodes, the internal resonator of the diode 

functions like an etalon, attenuating certain 

external modes, and therefore participating 

in the selection of the external mode. 

The effect of the internal resonator is less 

pronounced when an AR coating is added 

on the output facet. AR diodes do not lase 

without external feedback. The AR coating 

improves coarse and mode-hop free tuning 

of an ECDL and allows for more stable 

single-mode operation. TOPTICA's DL pro 

lasers therefore feature AR diodes. 

AR diodes for best performance 

The internal resonator of both FP and 

AR diodes can be synchronized with the 

grating movement by changing the diode 

current simultaneously. This “feed forward” 

mechanism moves the internal mode 

structure of the laser diode along with the 

external modes, permitting larger modehop 

free tuning. 

DFB & DBR Diode Lasers 

Laser diodes with internal grating 

Distributed Feedback (DFB) and Distributed 

Bragg Refl ector (DBR) laser diodes feature 

a grating structure incorporated in the 

semiconductor chip. The grating restricts the 

laser emission to a single longitudinal mode 

and thus determines the lasing wavelength. 

In a DFB laser, the grating is integrated into 

the active region (“gain section”) of the diode. 

In a DBR laser, the grating (“Bragg section”) 

is separated from the gain region. An 

additional “phase section” serves to maintain 

mode-hop free resonance conditions during 

a wavelength change. 

Frequency tuning is accomplished by 

thermally or electrically varying the grating 

pitch. Thermal tuning offers extremely large 

mode-hop free scans of hundreds of GHz. 

Electric modulation, on the other hand, can 

be employed for fast frequency modulation 

over a smaller range (several tens of GHz @ 

kHz to MHz modulation frequencies). 

ECDL or DFB? 

Whether to choose an 

external cavity diode laser or 

a DFB/DBR laser depends 

on the individual application. 

Contact the TOPTICA experts 

to fi nd the best solution for 

your needs. DFB diodes do 

not yet offer the wavelength 

range accessible by Littrow 

ECDLs. Tunable, narrow-band 

emission in the blue or red spectral range 

is the realm of external-cavity systems. 

An ECDL is also the preferred choice for 

applications that require a broad coarse 

tuning range, or an ultra-narrow linewidth 

(1 MHz or below). 

The main advantage of a DFB laser is 

its extremely large continuous tuning 

range. Mode-hop free scans of several 

nanometers are routinely attained. Typical 

DFB laser applications are gas sensing, 

Important specifi cations for FP- or ARbased 

ECDLs are the output power available 

from the stabilized diode, the attainable 

wavelength range, and the mode-hop free 

tuning range. TOPTICA also sells laser 

diodes individually, and the diodes available 

from stock, together with their specifi cations, 

are listed in our regularly updated stock list 

at www.laser-diodes.com. 

Laser diode with (red) and without 

(blue) external grating feedback. The 

left graph shows an FP diode, the right 

graph an AR diode. 

Schematics of DFB and DBR laser diodes. 

phase shifting interferometry, or the 

generation of tunable cw Terahertz 

radiation. The mechanical design of a DFB 

laser comprises no alignment-sensitive 

optical components, making these lasers 

particularly attractive for applications in 

rough industrial environments. 

www.toptica.com 5 

Tunable Diode Lasers Frequency Converted Lasers Photonicals TM Single-Mode Diode Lasers Ultrafast Fiber Lasers


Littrow and Littman Confi guration 

Compact and robust Littrow setup 

The most common types of ECDLs 

are the so-called Littrow and Littman 

confi gurations. In both cases, a grating is 

used to selectively refl ect a small range of 

the diode's emission spectrum back into 

the laser chip. This optical feedback forces 

the diodes into single-frequency operation. 

In Littrow confi guration, the fi rst order 

beam from the grating is directly refl ected 

into the diode. In Littman confi guration, by 

contrast, the fi rst diffraction order is fi rst 

refl ected from a mirror. It passes the grating 

a second time and is then sent back into 

the laser diode. In both setups, the main 

contribution to the technical linewidth are 


usually electronic noise, acoustic noise 

and vibrations that affect the cavity length. 

In practical operation, the compact and 

more robust Littrow cavity often shows a 

narrower linewidth. 

Highest power from Littrow lasers 

The Littrow setup has further advantages. 

As the laser light refl ects off the grating only 

once, losses into other diffraction orders 

do not occur. The output power of Littrow 

lasers is thus considerably higher than that 

of comparable Littman setups. Moreover, 

Littrow lasers can be operated with both 

standard Fabry-Perot (FP) diodes and antirefl 

ection (AR) coated laser diodes, while the 

Littman design usually employs AR coated 

diodes. FP diodes provide higher powers, 

encompass a broader wavelength range 

and are usually less expensive. However, 

TOPTICA also integrates AR coated diodes 

when large tunability is required, and when 

power plays a secondary role. 

The mode-hop-free tuning range of Littrow 

lasers can be greatly enhanced by adding 

a “feed forward” current modulation (see 

page 5). The marginal angular change of 

the output beam apparent with Littrow 

cavities can be effectively compensated for 

by a beam steering mirror rotated in parallel 

with the grating. 

Mode selection in ECDLs. The 

back facet and the feedback 

elements form the external 

resonator. The oscillating mode 

is selected not only by these 

elements and the semiconductor 

gain, but also by the internal 

modes (etalon) of the diode.

Frequency noise 

High stability and narrow linewidth are 

often key requirements for scientifi c diode 

lasers. Theoretically, the linewidth of grating 

stabilized diode lasers is given by the 

Schawlow-Townes formula and therefore 

very narrow. In reality, however, a number 

of processes and disturbances have an 

effect on the laser frequency. Laser current 

noise for example causes fl uctuations of 

the refractive index within the laser diode 

itself, and changes the overall optical length 

of the laser resonator. Acoustic noise and 

vibrations have a direct infl uence on the 

mechanical length of an external resonator, 

while temperature and air pressure 

fl uctuations cause frequency drifts by 

changing the refractive index of air. 

Linewidth and drift 

Processes that are faster than the laser 

frequency measurement itself, add to the 

laser's technical linewidth, while slower 

processes will cause a frequency drift 

between successive measurements. As 

fast measurement techniques will not reveal 

slower drift effects on the linewidth, it is 

important to always note the time scale of 

the measurement when specifying linewidth 

values. 

Main causes for frequency variations and their respective time scales. 

Linewidth measurement 

TOPTICA uses different ways to measure 

laser linewidths. For fast measurements, 

a delayed self-heterodyne technique is 

employed. The laser beam is split into two 

probe beams, one of which is frequencyshifted 

by an acousto-optical modulator 

and delayed utilizing a 1 km long fi ber. 

Subsequently, the beams are re-combined 

on a fast photo detector, the output of which 

is connected to an RF spectrum analyzer. 

The fi ber line corresponds to a time delay 

of 5 µs. Frequency fl uctuations within this 

time contribute to the beat note, the width 

of which is approximately twice the laser‘s 

linewidth. 

Linewidth measurements on longer time 

scales are accomplished by measuring the 

beat width of two identical lasers with a fast 

detector and an RF spectrum analyzer (sub 

Hz .. 100 MHz), by using a Fabry-Perot 

interferometer (MHz .. GHz, see page 49), 

or by directly determining the coherence 

length with a Michelson interferometer. 

Linewidth and coherence length 

Laser linewidth and coherence length are 

linked by an inverse proportionality. The 

numerical factor depends on the spectral 

line shape. For a Gaussian spectral profi le, 

the coherence length is 132 m / (linewidth 

in MHz). 

Coherence coverage of more than 

12 decades. 

Delayed self-heterodyne 

linewidth measurement. 



pro Technology 

Stability and Ease of Use 

DL pro, TA pro, DL/TA-SHG/FHG pro 

Modern physics experiments get more and 

more involved with an increasing number 

of instruments and especially laser sources 

running simultaneously. Uncovering a 

faint signal never seen before from the 

ever present noise background requires 

highest performance, a love of tiny detail, 

dependability and trust in workmanship. At 

TOPTICA, we come from laboratories like 

our customers', and we understand what it 

means to spend long nights relying on laser 

technology for collecting data. Only the 

best tools are good enough to contribute to 

such a competitive fi eld. With this in mind, 

TOPTICA continues to follow a strategy to 

develop a second generation of its scientifi c 

instrumentation and make it broadly 

available. We are now excited to introduce 

the “pro” Technology. 


Our aim at TOPTICA is to develop lasers, 

that are the best of their class, more stable, 

more reliable and at the same time easier 

to use. The DL pro, a revolutionary new 

external cavity diode laser, introduced in 

2007, launched TOPTICA‘s pro series with 

great success. This laser was designed 

with ultimate stability in mind – in particular 

stability against temperature changes and 

acoustic disturbances. The DL pro has 

quickly become the heart of TOPTICA's 

diode laser activities, and we have been 

working hard to extend the design 

principles also to other laser sources. The 

DL pro‘s narrow linewidth and robustness 

to temperature changes and vibrations are 

unmatched by any other commercial diode 

laser. Together with our high end laboratory 

driver, control and locking electronics it has 

convinced many leaders in the fi eld to trust 

in pro technology. 

The next milestones are the pro versions of 

amplifi ed (TA pro) and frequency converted 

(DL/TA-SHG/FHG pro) tunable diode laser. 

Paying attention to every little detail these 

already established products have acquired 

yet another edge. Last but not least, the pro 

technology concept at TOPTICA has also 

been incorporated into our line of ultrafast 

lasers, emerging as the FemtoFiber pro. 

It completes the line of scientifi c “pro” 

laser products at TOPTICA. The pro series 

ensures technological leadership for modern 

physics experiments for the years to come 

and gives you the edge to put you ahead of 

the crowd. 

pro technology stands for: 

� Stability 

� Ease of use 

� Thermal and acoustic ruggedness 

� Hands-off operation wherever possible 

� Flexure joints wherever expedient

DL pro 

Ultra-Stable Widely Tunable Littrow Laser 

As the fi rst laser of the pro series, the DL 

pro has already demonstrated how much 

even a well-established laser like the DL 

100 can be further improved. 

Main advantages 

For the user the main advantages are 

large mode-hop free tuning, alignment free 

operation, and highest acoustic and thermal 

stability of any ECDL on the market. The 

result is most reliable and most convenient 

operation for high end laboratory work. 

To achieve this ultimate performance 

accompanied by ease of use, the DL pro 

mechanics possesses degrees of freedom 

exactly where they are needed. Coarse and 

fi ne tuning have been skillfully separated: 

Coarse tuning is performed by a well 

defi ned rotation of the grating, that precisely 

selects any requested wavelength within 

the complete diode gain spectrum. Mode 

hop free tuning is realized by a system of 

robust fl exure joints that requires only tiny 

adjustments. It rotates the laser's grating 

around the perfect “virtual” pivot point 

(international patent pending). 

The compact and stable external cavity 

resonator has its fi rst mechanical resonance 

above 4 kHz — one reason for its superior 

acoustic stability. Special care has been 

taken in choosing dimensions and materials 

to reduce frequency drifts due to variations of 

the ambient temperature. Notwithstanding 

its stability, the DL pro is easy to align. The 

experienced user can even exchange the 

laser diode himself. 

DL pro Piezo transfer function. The 

fi rst acoustic resonance is above 

4 kHz. 

Selected antirefl ection-coated (AR) 

diodes 

In the DL pro only carefully selected AR 

coated laser diodes are used. It is available 

at four standard wavelengths, providing 

most stable single-mode operation and 

easy handling. Other wavelengths are 

available on request. 

Motorization 

The DL pro can also be equipped with a 

motor for wavelength selection. The user 

can then choose the wavelength using 

coarse or fi ne dials on the control box or 

via computer control using an RS 232 

interface. The wavelength can be set to any 

value within the gain bandwidth of the diode 

with an accuracy of approximately 0.2 nm 

by software commands. For further details 

on the motorized wavelength selection 

option MOT/DL pro, please contact your 

local TOPTICA representative. 

Measured beat signal of two free running 

DL pro 780 averaged over 10 centered 

sweeps with a sweep time of 100 ms 

each. The resulting beat width is 308 kHz, 

the linewidth approx. 150 kHz. 

Laser frequency response to a 10 K air 

temperature change (laser and electronics 

inside climate chamber). 

∆ 

DL pro — the ultimate Littrow 

diode laser. 

First class optomechanic (patent pending). 

Key features 

· Ultra-stable mechanics 

· Best Littrow design available 

· Optimized virtual pivot point 

· 30 – 50 GHz mode-hop free tuning 

· Convenient and simple coarse tuning 

up to 95 nm 

Alignment free coarse tuning over 

tens of nm. 




Standard Systems DL pro 

Wavelengths and Specifi cations 

Specifi cations 


DL pro 780 DL pro 850 DL pro 940 DL pro 1040 

Wavelength range 765 – 795 nm 815 – 855 nm 915 – 985 nm 980 – 1075 

Max. output power 30 – 80 mW 30 – 80 mW 30 – 80 mW 20 – 50 mW 

Mode-hop free tuning 30 – 50 GHz 30 – 50 GHz 30 – 50 GHz 30 – 50 GHz 

Typical linewidth (5 µs) 100 kHz 100 kHz 100 kHz 100 kHz 

ASE (dB) < -35 .. -55 dB < -35 .. -55 dB < -35 .. -55 dB < -35 .. -55 dB 

For further specifi cations and available options, please see pages 13 - 15. 

Normalized spectra of DL pro 780 

at three different wavelengths. 






at three different wavelengths.

DL 100 

External Cavity Diode Laser in Littrow Design 

Principle of operation 

The excellent performance of the established 

DL 100 results from its Littrow type externalcavity 

laser setup in a very rugged design. 

Micrometer screws allow for coarse manual 

tuning, while precise mode-hop free scans 

are driven by a Piezo actuator. Lockable 

x/y/z adjustments together with metal 

fl exures provide rigid and repeatable 

control of both the laser beam collimation 

and the feedback of the grating. The laser 

resonator is thermally stabilized by means of 

a Peltier cooler, connected to the DTC 110 

Diode Temperature Control. Ultra low 

noise operation of the DL 100 is achieved 

by means of the Diode Current Control 

DCC 110. In addition, TOPTICA offers a 

variety of electronic regulator modules to 

stabilize the laser frequency in demanding 

scientifi c and industrial applications (for a full 

description see pages 30 - 43). 

Modular design 

The DL 100 diode laser head comprises a 

mounting base which serves as a heat sink, 

a temperature sensor and Peltier cooler for 

active temperature control, a laser base 

plate, a laser diode holder with a collimator 

and a grating mount featuring a Piezo 

actuator for precise tuning. The laser diode 

itself can be easily exchanged by replacing 

the diode holder without dismantling the 

setup. The DL 100 is available with AR and 

FP diodes. FP diodes normally deliver higher 

power at lower cost, while AR coated didoes 

Linewidth of DL 100, determined with 

a delayed self-heterodyne beat setup 

(integration time 5 µs). The FWHM of 

the beat signal is equal to two times the 

laser linewidth (450 kHz). 

offer wider tuning, more stable single-mode 

behaviour and narrowest linewidths. 

The control and supply units are designed as 

modular plug-ins which can be combined to 

meet any application requirement. Further 

modules like Scan Controls, Lock-In, PID 

regulators and Pound-Drever-Hall detectors 

complete the modular electronic setup. 

Hands-on setup 

The DL 100 has evolved in research 

laboratories and therefore offers multiple 

features and the necessary versatility for 

a changing environment. For instance, all 

important alignment parameters are easily 

accessible from above and are adjustable 

by lockable micrometer screws. If an OEM 

application requires a fi xed laser setup with 

limited user access, TOPTICA can also 

provide a “hands-off” version of their lasers. 

Reasonably priced 

The DL 100 Diode Laser Series with the 

Diode Control Unit DC 110, the Diode Current 

Control DCC 110 and the Diode Temperature 

Control DTC 110 is your complete step into 

the “World of Diode Lasers”. Due to the 

strong emphasis on passive mechanical 

stability, low thermal expansion and drifts, 

an excellent performance of the DL series 

can be guaranteed at an affordable price. 

DL 100 frequency sweep over four Rb 

absorption lines (red), utilizing feed 

forward. FPI transmission peaks (blue, 

FSR 1 GHz) are shown for reference. 

DL 100 — one of the most common 

lasers in research laboratories. 

Key features 

· Widest wavelength coverage 

375 .. 1670 nm 

· Highest power up to 300 mW 

· Coarse tuning up to 110 nm 

· Mode-hop free tuning up to 30 GHz 

· Single-frequency operation 

· Free running linewidth 

100 kHz .. 1 MHz (5 µs) 

· AR & FP diodes 

· Regularly updated diode stock list: 

www.laser-diodes.com 

· Options: isolators, beam shaping, fiber 

coupling, high frequency modulation, ... 




DL DFB 

Diode Lasers with Largest Mode-hop Free Tuning Range 

DL DFB laser heads with driving 

electronics (series DC 110). 

Key features 

· Every wavelength between 760 nm and 

3000 nm available 

· High output power up to 150 mW 

· Mode-hop free tuning up to 1400 GHz 

(4 nm) 

· Single-frequency operation, linewidth 

typ. 0.5 .. 4 MHz (5 µs) 

· Reliable operation even in harsh 

environments (no alignment-sensitive 

optomechanics) 

· Optional: high-frequency modulation, 

optical isolation, fiber coupling 

· Regularly updated diode stock list: 



Wide wavelength range 760 .. 3000 nm 

TOPTICA's DL DFB lasers offer wide 

tunability, narrow linewidth and high output 

power in a compact and very rugged setup. 

Systems can be provided at any wavelength 

between 760 and 3000 nm. A large variety 

of wavelengths is usually available from 

stock (including 780 nm, 785 nm, 795 nm, 

852 nm, 895 nm, 935 nm and 1064 nm), 

but customized wavelengths can be realized 

even in low quantities and within short lead 

times. 

The absence of any alignment-sensitive 

opto-mechanical components ensures high 

long-term stability and reliability. The DL DFB 

therefore opens new possibilities for projects 

that require automated operation, or even 

for airborne experiments. 

Frequency tuning of TOPTICA's DL DFB 

lasers is accomplished by changing either 

the chip temperature (frequency change 

ca. 25 GHz/K) or the operating current 

(frequency change 1-5 GHz/mA). Thermal 

tuning achieves extremely large mode-hop 

free scan ranges, electric tuning is favorable 

for rapid modulation and frequency 

stabilization tasks. 

Thermal frequency tuning of 

a DL DFB. Linearized scans 

can be accomplished with 

TOPTICA's iScanTM technology 

(see pages 42 - 43). 

Frequency and linewidth control 

The high sensitivity of DFB diodes to 

temperature variations requires precise 

control of the laser temperature. The 

DL DFB laser head incorporates TOPTICA's 

patented ColdPack (see page 45): four 

thermoelectric elements stabilize the laser 

temperature, or serve to heat and cool the 

laser diode. TO-3 diode packages with builtin 

TEC and thermistor, available at selected 

DFB wavelengths, can also be mounted 

into the DL DFB laser head. To fully exploit 

the attractive properties of DFB diodes, the 

laser system is equipped with TOPTICA's 

low noise driver electronics SYS DC 110 

(see pages 32 - 39). Under laboratory 

conditions, a frequency stability of 20 MHz 

(RMS) has been demonstrated over a 10hour 

measurement period, without any 

additional frequency stabilization. 

The short-term laser linewidth is in the 

range of 500 kHz to 4 MHz (integration time 

5 µs), depending on the diode wavelength. 

TOPTICA can provide means to narrow the 

linewidth to well below 100 kHz. Please 

inquire about a customized solution. 

Application examples of DL DFB lasers 

include alkaline spectroscopy (K, Rb, 

Cs), gas sensing (e.g. O 2, H 2O, methane), 

holography, phase-shifting interferometry, 

and the generation of tunable cw-Terahertz 

(THz) radiation. 

Absorption spectrum of water 

vapor, recorded with a thermally 

tuned DL DFB at 935 nm.

Options DL Series 

Laser DL 100 DL pro DL DFB 

SP/DL 100 Included Included Not needed 

DL-Mod Optional Included Optional 

Isolator 30 dB Optional* Optional* Optional* 

Isolator 60 dB Optional* Optional* Optional* 

APP J expanding Optional* Optional* Optional* 

APP compact Optional* Optional* Optional* 

FiberDock Optional Optional Optional 

*Not for all wavelengths and/or not in combination with all other options. 

Beam angle compensation mirror: SP/DL 100 

In TOPTICA's Littrow-type ECDL, the beam angle compensation mirror is mounted parallel to the grating 

to eliminate a change of the output beam angle when tuning the laser. It is included in the DL 100 

and DL pro, and not needed for the DL DFB. 

High frequency modulation PCB: DL-Mod 

The PCB includes a FET and a Bias-T. 

The FET is DC coupled with an electrical bandwidth (-3 dB) of 20 MHz. The Bias-T is AC-coupled with 

an electrical bandwidth of > 300 MHz. The optical modulation bandwidths are generally lower and 

depend on the properties of the diode. 

Single-stage isolator: Isolator 30 dB 

Isolators are used to protect the laser diode from back refl ections. This not only prevents damage to 

the diode but also ensures untroubled single-mode operation and tuning. Fiber coupling with angle 

polished fi bers (both ends) requires at least a single stage isolator. See also page 47. 

Double-stage isolator: Isolator 60 dB 

Double stage isolators are needed if refl ections from the experiment into the laser are expected. Fiber 

coupling with non-angle polished fi bers also requires a double stage isolator. See also page 47. 

Adjustable anamorphic prism pair: APP J 

TOPTICA's patented adjustable anamorphic prism pairs are used to expand or compress a laser beam 

in one direction, by a factor between 2 and 5. The main application is to render an elliptical diode laser 

beam circular. See also page 46. 

Compact prism pair for beam compression: APP compact 

The compact prism pair is used for beam compression only. The compressed circular beam is small 

enough for using inexpensive small aperture isolators, and the fi ber coupling effi ciency is enhanced by 

approximately 10 %. The compression ratio is set at the factory. 

Fiber coupler: FiberDock TM 

TOPTICA's patented fi ber coupler provides highest single-mode fi ber coupling effi ciencies, easy alignment 

and at the same time highest stability. TOPTICA additionally offers a wide range of single-mode 

and polarization maintaining fi bers, including fi ber-optic beam splitters. Optical isolation is mandatory for 

fi ber-coupled diode laser systems. See also page 48. 




Confi gurations DL Series 

Diode Lasers DL 100, DL pro, DL DFB 

Confi gurations Available wavelenths 

Confi guration I Consists of DL 100 DL pro DL DFB 

• DL 100, DL pro, DL DFB Given by avail- See page 10 660 

+ Modulation PCB DL-Mod able laser diodes 

760 – 3000 nm 

(optional) 

(www. laserdiodes.com) 

Confi guration II Consists of 

Confi guration III Consists of 

Confi guration IV Consists of 


• 

• 

+ 

+ 

• 

• 

• 

+ 

+ 

• 

• 

+ 

+ 

*Please check stock list for diode availability. 

DL 100, DL pro, DL DFB 

Isolator 30 dB, large aperture 

FiberDock (optional) 

Modulation PCB DL-Mod 

(optional) 


APP compact, compressing 

Isolator 30 dB 



(optional) 


Isolator 60 dB, large aperture 



(optional) 

Fixed frequency versions for non-tuning applications 

DL 100/R, DL pro/R: fi xed frequency laser – no Piezo actuator, no Scan Control. 

Sample applications for DL/R lasers: 

• Interferometry 

• Holography 

• Raman spectroscopy 

Other custom confi gurations are available on request. 

630 – 935 nm* 

1260 – 1395 nm* 

1490 – 1610 nm* 

390 – 420 nm* 

630 – 1180 nm* 

1260 – 1395 nm* 

1490 – 1600 nm* 

650 – 900 nm* 

1060 – 1090 nm* 

1285 – 1335 nm* 

1515 – 1585 nm* 

765 – 795 nm 

815 – 855 nm 

915 – 985 nm 

980 – 1075 nm 

765 – 795 nm 

815 – 855 nm 

915 .. 985 nm 

980 .. 1075 nm 

765 .. 795 nm 

815 .. 855 nm 

660 

760 – 935 nm 

1260 – 1395 nm 

1490 – 1610 nm 

660 

760 – 1180 nm 

1260 – 1395 nm 

1490 – 1600 nm 

660 

760 – 900 nm 

1060 – 1090 nm 

1285 – 1335 nm 

1515 – 1585 nm

Specifi cations DL Series 


Laser DL 100 DL pro DL DFB 

Center wavelengths 

373 .. 488 nm* 

632 .. 1670 nm* 

Available standard wavelengths of DL 100, DL pro and DL DFB. 

780, 850, 940, 1040 nm 

660 nm 

760 – 3000 nm 

Typical power range 3 .. 220 mW Max. 50 – 80 mW 2 .. 150 mW 

Typical coarse tuning range 2 .. 80 nm ≥ 30 nm 2 .. 6 nm 

Typical mode-hop free 

tuning range 

≥ 20 GHz 30 – 50 GHz 1000 GHz 

Typical linewidth 

(5 µs integration time) 

0.1 – 1 MHz 100 kHz 0.5 – 4 MHz 

Typical output beam characteristics 3 mm x 1 mm, 1 mm x 1 mm with APP C 

Beam height 53.9 ± 0.5 mm 50 ± 0.3 or 58 ± 0.3 mm 53.9 ± 0.5 mm 

Typical polarization Linear, approx. 100:1 

Fiber coupling effi ciency**: min. (typ.) 55 (65) % 

Fiber coupling effi ciency with APP**: min. (typ.) 65 (75) % 

Typical long term frequency change with room 

temperature 

400 MHz / K

High Power 

Diode Lasers and Amplifi ers 

In the past, powerful tunable cw light could 

only be attained by employing large solidstate 

lasers or dye ring laser systems with 

expensive pump sources. In 1998 TOPTICA 

developed the fi rst tapered amplifi er TA 100 

system, a semiconductor laser solution 

offering full tunability with the lowest 

operating costs and long lifetime. Since 

then this Master Oscillator Power Amplifi er 

(MOPA) system has been continuously 

improved, and TOPTICA‘s range of high 

power systems has grown: today one can 

choose between several laser (TAs, DLX) 

and amplifi er (BoosTA) systems. 

Overcoming power limits of laser 

diodes 

The output power of single-mode laser 

diodes is limited and not suffi cient for a 

variety of applications. The output facets 

of these laser diodes (typically 1 x 3 µm²) 

suffer optical damage at higher power 

levels, whereas with larger facets the 

desired spatial mode properties cannot be 

maintained. 

With tapered amplifi er based laser systems, 

TOPTICA has managed to overcome both 

limitations, offering not only high power and 


tunability, but also excellent beam quality 

and extremely narrow linewidth. 

The master laser beam is coupled into 

the small single-mode channel at the AR 

coated rear facet of the tapered amplifi er 

chip. The single-mode channel acts as a 

spatial mode fi lter (like a single-mode fi ber). 

The close-fi tting tapered angle is adapted 

to the diffraction angle of a single-mode 

laser at a specifi ed wavelength. The laser 

beam is amplifi ed in a single pass through 

the tapered region, without losing its high 

spectral and spatial quality, and leaves the 

chip through the AR coated large output 

facet. 

Versatile solutions 

The TA 100, TA DFB and TA pro laser 

systems consist of a grating stabilized 

diode laser and a spatially separated 

tapered semiconductor amplifi er. This 

MOPA concept combines the tunability 

and linewidth of the master oscillator with 

the high power and excellent beam quality 

available from tapered amplifi ers. The 

modular and open concept of these laser 

systems make them versatile and fl exible. 

The TA 100 and the TA DFB feature either 

Entrance 

facet, AR 

coated 

Injected 

beam 

Tapered 

gain region 

Single-mode 

channel 

Tapered 

amplifi er 

Output facet, 

AR coated 

Geometry of a tapered semiconductor 

amplifi er chip. 

the DL 100 or DL DFB as master lasers 

in a well-proven and successful MOPA 

laser system. The TA pro is a member of 

the pro series and consistently follows its 

concept: maximum stability and ease of 

use. Together, the TA systems offer the 

broadest wavelength coverage and highest 

output powers. 

The DLX 110 laser consists of an external 

cavity diode laser with a specifi cally 

designed high power laser diode. It offers 

tunable output in a single spatial mode 

and narrow linewidth. Various options are 

available, ideally suited for spectroscopy 

and related applications. Both the TA 

and DLX laser systems are equipped with 

TOPTICA‘s sophisticated driving and 

control electronics SYS DC 110 including a 

wide range of user-friendly stabilization and 

control options (see pages 32 - 39). 

The BoosTA amplifi er system employs the 

tapered amplifi er chips of the TA 100 in a low 

cost and compact amplifi er module. For the 

versed scientist it allows easy integration 

into an existing setup. The BoosTA features 

compact electronics that are integrated into 

the laser head.

TA pro 

High Power with Maximum Stability and 

Ease of Use 

In MOPA confi gurations, the stability and 

linewidth of the system depends crucially on 

the master oscillator. Therefore the TA pro 

features the DL pro as master laser (see 

pages 9 - 12). The other components have 

to ensure not only stable beam pointing, but 

also the best possible optical and thermal 

performance. 

The TA pro utilizes completely new mirror 

mounts based on fl exure technology, 

that are conveniently adjustable from the 

top (patent pending). They ensure easy 

coupling into the tapered amplifi er, while 

offering superior stability to prevent intensity 

fl uctuations that might arise from beam 

pointing variations. The unit containing the 

TA chip and optics is optimized to be most 

stable and to offer best heat conductivity. 

For beam shaping, TOPTICA uses custom 

made optical components, achieving 

the best possible beam profi le and fi ber 

coupling effi ciency. 

Compact integration with high quality 

components 

A high quality optical isolator placed 

between the master and the amplifi er not 

only protects the master laser, but also 

guarantees spectrally robust operation. 

Between isolator and tapered amplifi er 

a probe beam is split off and is available 

for spectral stabilization and monitoring 

purposes. All mechanical and optical 

components are integrated in a housing, 

that is machined from a solid block. The 

complete system has proven its stability in 

numerous tests in TOPTICA's laboratories. 

Standard system TA pro 

Wavelength range 

(nm) 

Output power 

(W) 

Mode-hop free 

tuning range 

(GHz) 

Typical linewidth 

(kHz / 5 µs) 

ASE suppression 

(dB) 

Main advantages 

The main advantages for the user are the TA 

pro's unmatched stability against acoustic 

noise, vibrations and ambient temperature 

changes. The TA pro is easy to align, 

very stable when aligned, and it offers the 

best possible beam quality available from 

tapered amplifi ers. 

The TA pro is well-characterized, and 

available in three standard wavelengths. 

Other wavelengths are available as TA 

100, TA DFB (see page 18), or on special 

request. 

Ultra stable 

mirror mount 

Tapered amplifi er with 

optics and heat 

management 

Setup of the TA pro MOPA system: compact and stable. 

TA pro 765 TA pro 780 TA pro 850 

760 – 778 765 – 790 827 – 855 

Max. 1.5 Max. 1 Max. 0.5 

30 – 50 

100 

< -35 .. -55 

Optical isolator 60 dB 

TA pro – next generation of amplifi ed 

tunable diode lasers. 

Key features 

· MOPA concept 

· DL pro master laser 

· Highest powers up to 1.5 W 

· Excellent beam quality: typ. M² < 1.5 

· Standard wavelengths 765 nm, 

780 nm, and 850 nm 

· Easy alignment from outside 

Ultra stable 

mirror mount 

Optical isolator 60 dB 

DL pro as master 

oscillator 

Amplifi er output spectrum at 850 nm, 

with and without injected master laser. 

With seed the incoherent background is 

suppressed by approx. -50 dB. 




TA 100, TA DFB 

Amplifi ed Tunable Diode Lasers 

Key features 

· MOPA concept 

· Superb single-frequency master lasers 

· Highest powers up to 1.5 W 

· Excellent beam quality: 

typ. M² < 1.5 

· Wide wavelength coverage from 

649 nm .. 1083 nm (with few gaps) 

· Improved mirror design 

· Regularly updated stock list for 

TA chips: 


Beam profi le of TA 100 laser system at 

780 nm operating at an output power 

of 1 W. 

TA series options 

Second optical isolator for 

TA chip protections 

DL-Mod/TA: High frequency 

master laser modulation 

TA-Mod: High frequency 

intensity modulation 

FiberDock 


The TA 100 is equipped with a modifi ed 

DL 100 master laser, while the TA DFB 

features a DL DFB master oscillator. DFB 

based diode lasers are described on page 

12. Their mode-hop free tuning range (up 

to 1400 GHz) is by far greater than that of 

external cavity laser systems. The linewidth 

of DFB lasers is approximately 0.5 – 4 MHz 

and thus slightly larger than that of ECDLs. 

The TA 100 and TA DFB are offered at any 

wavelength, where both a suitable master 

diode and tapered amplifi er are available. 

TA pro TA 100 TA DFB 

Optional Optional Optional 

Included Optional Optional 

Optional Optional Optional 

Optional, also for 

probe beam 

Optional Optional 

Red tapered amplifi ers 

Working together with leading chip 

manufacturers, TOPTICA has managed 

to develop tapered amplifi ers in the red 

spectral range. These systems deliver up 

to 500 mW around 670 nm, and up to 

250 mW around 650 nm. The TA 670 can 

be tuned to the Lithium atomic resonance 

at 671 nm and to the Argon ion resonance 

at 668 nm. Eliminating the need for big 

and expensive dye lasers, this is the ideal 

system for Lithium laser cooling and for 

plasma spectroscopy. TA 100 laser systems 

around 650 nm and 670 nm are exclusively 

available from TOPTICA. 

P(I) characteristics of 

three typical tapered 

amplifi ers. The TA 100 is 

a cost effective way to 

achieve single frequency 

laser radiation in the 

Watt regime. 

TA 100 in red. TOPTICA exclusively 

delivers single frequency diode lasers 

with 500 mW @ 670 nm and 

250 mW @ 650 nm.

DLX 

High Power Tunable Diode Laser 

Direct power 

The DLX 110 is an external cavity diode laser 

system utilizing a specifi cally designed high 

power laser diode. It provides up to 1 W 

output power in a single spatial mode with 

very narrow linewidth. Its high wavelength 

stability and superior life time make it ideal 

for demanding applications such as highresolution 

spectroscopy. The operating 

wavelength can be manually adjusted 

over more than ± 5 nm around the center 

wavelength and can be fi ne-tuned modehop 

free over more than 15 GHz. TOPTICA's 

proprietary thermal management and 

robust mechanical design ensures longterm 

stability and reliable operation. 

RockSolid technology 

The DLX features a cavity design employing 

“RockSolid” technology. RockSolid greatly 

reduces the laser's sensitivity to vibrations 

and acoustic noise. The laser is therefore 

easy to stabilize without compromising 

the mode-hop free tuning range. The 

DLX 110 provides the space for integration 

of a 60 dB isolator into the laser head. It 

is also available with TOPTICA's robust 

fi ber coupler FiberDock, offering stable 

fi ber delivery and an extra probe beam for 

analysis and stabilization. 

The RockSolid technology 

minimizes the susceptibility 

of the DLX to vibrations and 

acoustic noise. 

Modulation and stabilization options 

The DLX-Mod option permits fast 

modulation and control of the laser 

frequency. Together with the built-in Piezo 

actuator it can be used to tightly lock the 

laser to atomic transitions or high-fi nesse 

cavities to further reduce the laser linewidth. 

The laser system is complemented by a 

modular set of control electronics from the 

established DC 110 series. 

A detailed description of available control 

modules can be found in the Electronics and 

Photonicals sections (see pages 30 - 43). 

Doppler broadened 

and Doppler free Rb D2 spectrum (780 nm, CO: 

“cross over”). 

Key features 

· 1 W @ 780 nm, 500 mW @ 767 nm 

· RockSolid technology 

· Excellent beam quality, M² typically 

≤ 1.5 

· Options: high-frequency modulation, 

optical isolation, fi ber coupling 




BoosTA 

High Power Semiconductor Optical Amplifi ers 

BoosTA FiFo, fi ber input and output for 

most convenient amplifi cation. 

Key features 

· Compact amplifi er module 

· Gain up to 20 dB (x 100) 

· Output power up to 1.5 W 

· Spectral properties of master oscillator 

are maintained 

· Many wavelengths available 

(649 .. 1083 nm) 

· Regularly updated internet stock list for 

TA chips: 



BoosTA 

The BoosTA is the economic amplifi er 

alternative for the experienced scientist, 

who wants to amplify a DL 100 or any other 

linearly polarized master laser. It includes 

computer controlled stand-alone electronics 

and all the optics to accept a collimated 

laser beam as input and to provide a wellcollimated 

output beam. 

The user is responsible for optical isolation 

of the seed laser, and for appropriate 

mode matching to the tapered amplifi er. 

The amplifi er chips are the same as in the 

TA 100 system, yet the electronics are 

integrated into the laser head, resulting 

in a very compact amplifi er system. The 

system features not only a driver current 

Typical saturation behavior of tapered amplifi er chips 

for various amplifi er currents (more than 40 mW seed 

power is not recommended). 

fi ne adjustment, but also an RS 232 

interface to ease maintenance and control 

of the embedded micro controller via a 

standard PC. The RS 232 interface can be 

used to monitor and/or control parameters 

like temperature, amplifi er current and 

laser power. The separate power supply 

minimizes the impact of thermal and 

electronic radiation (EMC) on the laser head. 

The integration of an optional output isolator 

into the laser head reduces unwanted back 

refl ections into the amplifi er. 

Optional single-mode fi ber coupling is 

available for fi ber input and fi ber output. 

When both are equipped (FiFo option), the 

amplifi er is particularly easy to setup.


TA pro TA 100 TA DFB DLX 110 BoosTA 

Confi guration MOPA MOPA Laser Amplifi er 

Master laser DL pro (integrated) DL 100 (integrated) DL DFB (integrated) External 

Center wavelengths 765, 780, 850 nm 649 .. 1083 nm* 760 .. 1083 nm* 765, 780 nm 649 .. 1083 nm* 

Max. power 1.5 W 1.5 W 1.5 W 1 W 1.5 W 

Coarse tuning 18 .. 28 nm 15 .. 70 nm 1 .. 4 nm 10 nm 15 .. 70 nm 

Typical mode-hop free 

tuning 

30 – 50 GHz 20 GHz 1000 GHz > 15 GHz 

Depends on 

master laser 

Linewidth (5 µs) 0.1 .. 1 MHz 0.1 .. 1 MHz 0.5 .. 4 MHz Typ. 1 MHz 

Polarization Linear > 100 : 1 

ASE background < - 40 dB < - 40 dB < - 40 dB < - 40 dB 

Beam quality M² 

< 1.5 

< 1.5 

(< 2.0 for some 

higher power chips) 

< 1.5 


higher power chips) 

Typically 1.5 

Depends on 

master laser 

Depends on 

master laser 

< 1.5 


higher power chips)*** 

Divergence < 1 mrad 

Beam height 50 ± 1 mm 50 ± 1 mm 50 ± 1 mm 53.9 mm 34.7 (53.9) mm 

Optical isolators 

Internal: 60 dB 

included 

Output: optional 30 

or 60 dB 


included 


or 60 dB 


included 


or 60 dB 

Output: 

optional 

60 dB 

Fiber coupling Optional Optional Optional Optional 

Fiber coupling effi ciency**: 

min. (typ.) 

Input: none 

Output: optional 30 or 

60 dB 

Input: 

optional**** 

Output: optional 

50 % (60 %) 50 % (60 %) 50 % (60 %) 50 % (60 %) 50 % (60 %)*** 

Control electronics SYS DC SYS DC SYS DC SYS DC 

Integrated into laser 

head 

+ external supply 

Frequency mod. option Included DL-Mod / TA DL-Mod / TA DLX-Mod - 

Intensity modulation option TA-Mod TA-Mod TA-Mod - - 

Environment temperature: 

Operating / transport 

15 - 30 °C / 0 - 40 °C 

Environment humidity Non condensing 

Operating voltage 100 - 120 V / 220 - 240 V AC, 50 - 60 Hz (auto detect) 

Power consumption 

Size head (L x W x H) 

Size electronics (L x W x H) 

Typ. 120 W 

Max. 300 W 

400 x 192 x 

90 mm³ 

400 x 465 x 

148 mm³ 

Typ. 120 W 

Max. 300 W 

340 x 210 x 

114 mm³ 

400 x 465 x 

148 mm³ 

Typ. 120 W 

Max. 300 W 

340 x 210 x 

114 mm³ 

400 x 465 x 

148 mm³ 

*Spectral coverage with gaps. **With TOPTICA's FiberDock, isolation required (60 dB for DLX) . 

***With suitable TOPTICA master laser. 

****Requires linearly polarized light from FC/APC PM fi ber. 

Typ. 100 W 

Max. 300 W 

312 x 100 x 

85 mm³ 

400 x 465 x 

148 mm³ 

Typ. 35 W 

Max. 60 W 

312 x 100 x 

85 mm³ 

179 x 175 x 

70 mm³ 



Frequency 

Converted Lasers 

Closing the spectral gaps 

Despite the impressive success story of 

semiconductor lasers, there are still some 

spectral “gaps”, wavelengths that cannot be 

directly accessed with current laser diode 

technology. Nonlinear frequency conversion 

techniques close these gaps by generating 

laser radiation in the UV, blue, green, yellow 

and orange spectral range, and even 

offer tunability. TOPTICA manufactures 

as standard solutions state-of-the-art 

laser systems based on second harmonic 

generation (SHG) and fourth harmonic 

generation (FHG). These laser systems 

utilize high end diode laser technology 

(with or without amplifi cation techniques) 

for the fundamental radiation. Customized 

systems for sum and difference frequency 

generation (SFG, DFG) are available upon 

request. 

TOPTICA's standard frequency converted 

lasers are available in the full spectral range 

between 205 nm and 630 nm, with only 

very few spectral gaps. Combining knowhow 

in diode laser technology and extensive 

experience in customized frequency 

conversion, highest output power levels 


and best performance are achieved. For 

customers that already possess a single 

frequency cw laser which is supposed 

to be frequency-doubled or frequencyquadrupled, 

TOPTICA also offers a standalone 

second harmonic generator. 

Second Harmonic Generation (SHG) 

and Fourth Harmonic Generation (FHG) 

The most common frequency conversion 

approach is the exploitation of second 

harmonic generation. This effect is used in 

TOPTICA SHG and FHG (realized by two 

cascaded SHG steps) laser systems. In the 

wave picture, the electromagnetic wave of 

the fundamental laser with frequency ω 1 is 

driving the polarization of a non-linear optic 

(NLO) crystal. This polarization oscillates not 

only at the fundamental driving frequency 

but due to the nonlinearity also at the 

“second harmonic” frequency ω 2=2*ω 1 

which in turn leads to the generation of 

coherent radiation of an electromagnetic 

wave at this frequency ω 2. In the photon 

picture, two photons of the fundamental 

laser (wavelength λ 1, frequency ω 1) are 

combined within such an NLO crystal 

to form one photon of twice the original 

Resonant “bow-tie” enhancement cavity. 

frequency and half the original wavelength 

(ω 2 =2*ω 1, λ 2=0.5* λ 1). The effi ciency of this 

process increases with the fundamental 

power, the non-linearity of the NLO crystal 

and the proper fulfi llment of the phase 

matching condition, i.e. the refractive index 

of the fundamental and the frequencydoubled 

laser light have to be equal within 

the NLO crystal. SHG and other frequency 

conversion techniques are schematically 

shown on the next page. 

TOPTICA's SHG systems 

Our SHG systems use a compact and 

rugged bow-tie resonator design with 

optimized mirror coatings to resonantly 

enhance the fundamental laser power. The 

resonators length is actively stabilized with 

respect to the wavelength of the fundamental 

laser employing the Pound-Drever-Hall 

method. This method is described in detail 

on page (page 35). It allows for tight locking 

of the resonator length with high long-term 

stability leading to reliably enhanced intraresonator 

power of the fundamental laser. 

A specially selected, anti-refl ection coated 

NLO crystal is placed inside the resonator 

and actively temperature controlled. The

TOPTICA's selection of non-linear 

crystals and their frequency converted 

wavelength range. All crystals have 

premium quality antirefl ection coatings. 

TOPTICA will choose the best crystal for 

your specifi c application. 

phase matching condition is fulfi lled either 

by temperature tuning or angle tuning 

depending on crystal type and operating 

wavelength. TOPTICA‘s specialty: 

Depending on requested laser power, 

wavelength and tunability requirements 

many different types of NLO crystals can 

be used for optimal results. A selection 

of important crystals and their respective 

wavelength coverage is shown above. All 

TOPTICA systems include mode matching 

optics to effi ciently couple the fundamental 

laser into the bow-tie resonator and beam 

shaping optics to realize best possible 

mode quality of the SHG light. In summary, 

all the features described above result in 

the most stable high output power solution 

at the chosen SHG wavelength available 

today. 

pro philosophy in frequency-converted 

systems 

Ease of use, best performance and highest 

stability are key characteristics of any “pro’ 

laser from TOPTICA. Taking a look at the 

frequency-converted systems from the out- 

and the inside, one will immediately realize 

the difference to other designs. The laser 

head is machined from a solid metal block 

for enhanced stability against vibrations, 

acoustic noise and temperature. Unique 

fl exure based mirror mounts are integrated 

featuring unmatched long term stability. The 

“bow-tie” resonator SHG pro, key element 

of all systems, is also manufactured out 

of one solid metal block and closed with 

a lid. The resonator mirror holders are 

specially designed for highest stability. Best 

Principle of Second Harmonic 

Generation (SHG) 

Principle of Fourth Harmonic 

Generation (FHG) 

long term stability and highest robustness 

against vibrations and acoustic noise 

are the results of our proprietary design. 

Integrated frequency-converted systems 

additionally comprise an ultrastable diode 

laser – optionally amplifi ed – of course also 

in pro design for narrow linewidth and best 

long term frequency stability. 

Advantages of tunable diode lasers in 

frequency converted systems 

Compared to other frequency-converted 

laser systems (e.g. optically pumped 

dye lasers with subsequent doubling 

stage, frequency-doubled Ti-Sa lasers), 

advantages of semiconductor confi gurations 

are that neither an external pump laser nor 

water cooling are required. The systems are 

most compact in size, extremely reliable, 

conveniently operated, and running costs 

can be kept low. 

The wavelength of the frequency-converted 

laser beam can be tuned by altering the 

fundamental laser color. Two tuning regimes 

are important. Mode-hop free tuning of 

several 10 GHz is realized by scanning the 

fundamental laser while the SHG resonator 

follows automatically. This tuning is fully 

adjustment-free and can be performed 

manually, by analog input or even under 

digital control. Coarse tuning over several 

nm is achieved by manually changing the 

wavelength of the fundamental laser which 

can be performed without realignment. 

Slight alignment of beam steering into the 

SHG resonator can maximize the output 

power. Only if phase matching has to 

Principle of Sum Frequency 

Generation (SFG) 

Principle of Difference Frequency 

Generation (DFG) 

be optimized, readjustment of the SHG 

resonator becomes necessary. Thanks 

to the pro design all adjustments can be 

conveniently executed also by the nonspecialist. 

Applications 

In basic science, frequency-converted 

laser systems enable new experiments 

with atoms, ions and molecules like 

spectroscopy, Rydberg excitation, 

ionization, laser cooling and trapping. 

Especially in frequency metrology and 

quantum computation many experiments 

require narrow linewidth laser sources in the 

blue and ultraviolet wavelength regimes. 

Further applications include interferometry, 

holography, biophotonics, Raman 

spectroscopy and gas analysis. 




SHG pro 

Stand-alone Second Harmonic Generators 

SHG pro — fl exible stand alone 

Second Harmonic Generator. 

Key features 

· Compact, stand-alone bow-tie cavity 

with highest mechanical and thermal 

stability 

· Frequency doubling of single-frequency 

lasers, e.g. Ti:Sapphire, Cr:LiSaF, dye 

lasers, gas lasers, DPSS, diode and 

fiber lasers 

· Highest cw conversion rates 

· Nearly TEM00 beam profile 

· Fiber coupling optional 


Professional unit for frequency 

doubling of cw lasers 

The stand-alone Second Harmonic 

Generator SHG pro is the device of choice 

if already existing cw lasers are to be 

frequency-doubled. The SHG pro package 

comprises mode matching optics for the 

external laser, ultra stable beam steering 

mirrors, digital locking electronics with 

automatic relocking for Pound-Drever-Hall 

stabilization of the resonator length, the 

ultra-stable bow-tie resonator in pro design 

and beam shaping optics of the frequencydoubled 

light. The temperature controlled 

NLO crystal and the mirror coating will be 

specially selected according to customer 

demands. Two integrated piezo-electric 

actuators for the stabilization of the 

resonator length are another specialty of 

the SHG pro. One actuator is used for high 

frequency response while the other one 

is utilized for large amplitude regulation. 

Highest conversion effi ciency and best 

reliability for narrow linewidth cw lasers 

are key features of TOPTICA‘s 

stand-alone Second Harmonic 

Generator. TOPTICA offers 

competent technical support 

to adapt the SHG pro to 

many varieties of existing laser 

systems. 

Specifi cations SHG 110 

Wavelength range* 410 nm - 1600 nm � 205 nm - 800 nm 

Optical conversion effi ciency** 

410 nm - 500 nm � 205 nm - 250 nm 5 - 10 % 

500 nm - 700 nm � 250 nm - 350 nm 12 - 20 % 

700 nm - 900 nm � 350 nm - 450 nm 20 % 

900 nm - 1600 nm � 

General characteristics 

450 nm - 800 nm 40 - 60 % 

Beam quality 

Optimum (nearly diffraction limited), single-mode fi ber 

coupling effi ciency > 60 % @ 400 nm 

Beam diameter 1 - 2 mm 

Beam height 50 mm 

Continuous scan range > 80 GHz @ 400 nm output (more with automatic relock) 

Polarization Linear 

Polarization ratio < 1:1000 

Residual infrared Typ. < 1 % (< 0.1 % with extra fi lter) 

Locking scheme*** Pound-Drever-Hall with automatic relock 

Output power noise Typ. < 3 % (depending on laboratory conditions & fundamental laser) 

Operating temperature 15 - 30°C 

Warm-up time Typ. < 5 minutes (depends on fi nal crystal temperature) 


Power consumption < 50 W 

Dimensions (L x W x H) 400 x 216 x 90 mm3 (head) and 12“ rack 

Approx. weight 8 kg (head) + 10 kg (control electronics) 

*Total wavelength range coverage requires several NLO crystals and mirrors. 

**Assuming 1 Watt single-frequency (< 2 MHz linewidth) cw laser input. 

***May require additional EOM (purchase and integration from TOPTICA recommended).

DL-SHG pro 

Frequency Doubled Diode Lasers 

Medium power, tunable UV, blue, 

green, yellow or orange light 

The DL-SHG pro system is a medium 

power solution with main applications in the 

spectroscopy of atoms, ions or molecules, 

laser cooling of ions, photo ionization and 

interferometry. Thanks to the pro design, it 

combines best performance at moderate 

initial and operating cost. 

The DL-SHG pro package comprises a 

solid laser head and a 19” electronics rack 

with modules that are needed to operate 

the fundamental laser, to stabilize the 

SHG resonator with respect to the laser 

wavelength and to temperature control 

the NLO crystal. The control rack can be 

equipped with additional modules to control 

the frequency of the fundamental laser or to 

actively reduce its linewidth further. 

The laser head features an ultrastable 

grating stabilized diode laser in DL pro 

design and the enhancement cavity 

SHG pro. Newly developed beam steering 

mirror mounts guarantee best short and 

long term stability of the output power. The 

beam profi le is optimized with integrated 

beam shaping optics. The NLO crystal as 

well as the mirror coatings are carefully 

selected. The unit further includes high 

performance optical isolators (60 – 90 db, 

depending on fundamental diode laser) in 

order to avoid unwanted feedback into the 

diode laser. Also a probe beam output of 

the fundamental laser is provided. 

Each individual DL-SHG pro system 

is a customized laser. While excellent 

stability and ease of use are common for 

all systems, other parameters like output 

power, coarse and fi ne tuning depend on 

the target wavelength and on the specifi c 

design solution. Typical values are: design 

wavelength within 390 nm to 630 nm (other 

wavelengths upon request), output power 

from 1mW to 40 mW, coarse tuning 2 to 10 

nm, mode hop free fi ne tuning of 30 GHz, 

linewidth < 500 kHz, frequency stability 

< 200 MHz/K (environmental temperature). 

Other specifi cations are listed on page 29, 

table “Specifi cations Frequency Converted 

Lasers”. 

Both beams, the fundamental and 

frequency-doubled laser output are 

accessible for the experiment. High power 

upgrade at a later stage can be performed 

at TOPTICA if an appropriate amplifi er 

source is available. 

DL-SHG pro — medium power cw, 

single frequency laser source for 

green, blue or UV light. 

Key features 

· UV, blue, green, yellow and orange 

wavelengths: 390 – 630 nm 

· Up to 40 mW output power 

· Tunable single-frequency emission, typ. 

linewidth < 500 kHz 

· Probe beam output of fundamental 

laser 

· High power upgrade possible 

(depending on amplifi er availability) 

Sketch of DL-SHG pro system: 

medium power solution at a 

variety of wavelengths from 

UV to orange. 




TA-SHG pro 

Frequency Doubled High Power Diode Lasers 

TA-SHG pro — high power, cw, tunable 

UV, blue or green laser source 

(inside view). 

Key features 

· UV, blue, green laser radiation: 

323 .. 540 nm (with only few gaps) 


· Tunable single-frequency emission, typ. 

linewidth < 500 kHz 

· Probe beam output of fundamental 

laser 

· Increased amplitude stability with 

“noise eater” option 

Schematic of the TA-SHG pro system: 

high power at common and exotic 

wavelengths. 


High power, tunable UV, blue 

or green laser light 

Many applications require narrow linewidth, 

tunable high power laser radiation at 

specifi c wavelengths ranging from the UV 

to the green spectrum of light. Examples 

are laser cooling of atoms and ions, plasma 

spectroscopy or holography. The TA- 

SHG pro is not only the system of choice 

for these applications but also serves as 

a replacement of HeCd or Ar-ion lasers, 

especially if single frequency operation and/ 

or tunability are required. 

From a conceptual point of view as well 

as from the physical size of control rack 

and laser head, the TA-SHG pro system is 

very similar to the DL-SHG pro laser. The 

main difference between the two is that in 

the TA-SHG pro system the master laser 

is amplifi ed by a tapered amplifi er section 

and additionally optically isolated before 

it is coupled into the SHG pro resonator. 

Therefore, signifi cantly higher output powers 

are possible. A special feature of the TA-SHG 

pro is the optional output power regulation. 

All other premium characteristics of the DL- 

SHG pro are maintained also in the TA-SHG 

pro. Ultra-low noise sensitivity, best long 

term stability of the laser frequency and 

output power as well as ease of use are just 

a few of them. 

The TA-SHG pro lasers are available 

within a wide wavelength range (currently 

available 323 .. 540 nm with only few 

spectral gaps). Being customized systems, 

TA-SHG pro characteristics might vary 

from solution to solution. Depending on the 

design wavelength, typical output powers 

of 10 mW to 400 mW are available. Besides 

the output power, the other parameters are 

similar to the ones achieved in the DL SHG 

pro systems (see table “Specifi cations 

Frequency Converted Lasers”, page 29). 

TA-SHG applications 

· Laser cooling and spectroscopy of atoms 

(e.g. Sr, Yb, Ca, Cr, Er, He, Mg, ...) 

· Laser cooling and spectroscopy of ions 

(e.g. Ca, Yb, Ba, ...) 

· Rydberg excitation 

· Plasma spectroscopy 

· Optical data storage, holography 

and interferometry

TA-FHG pro 

Frequency Quadrupled Diode Lasers 

“Deep UV” with diode technology 

More and more applications require reliable 

cw laser sources in the deep UV. Micro 

imaging or material science often rely on 

wavelength sensitive chemical reactions 

or smallest focal diameters. Advanced 

spectroscopy and frequency metrology 

experiments depend on narrow linewidth 

and tunable laser sources below 300 nm. 

Best possible beam quality, long coherence 

length, true cw operation – and everything 

in a reliable setup: Demands on such laser 

sources are manifold. 

TOPTICA‘s TA-FHG pro is a laser system 

consisting of a grating-stabilized diode laser 

as fundamental light source, a high power 

semiconductor amplifi er, and two cascaded 

second harmonic generation stages for 

producing fourth harmonic radiation of 

the fundamental light. The system can 

be understood as a TA-SHG pro plus an 

additional SHG pro, everything included 

in one solid laser head and equipped with 

state-of-the-art control electronics. For best 

performance, the complete system is now 

available in our pro design. This way, reliable 

deep UV output from a tunable laser is 

achieved. Neither an external pump source 

nor water cooling are required. Even a probe 

beam output of the 

fundamental laser 

and optionally also 

of the frequencydoubled 

laser is 

provided. 

cw, single-frequency and tunable 

The TA-FHG pro lasers are customized 

solutions for design wavelengths in the 

range of 205 nm – 270 nm. Typical coarse 

tuning with minor realignment is 1-4 nm, 

typical mode-hop free tuning is 40 GHz 

and wavelength dependent output powers 

up to 40 mW are available. The short term 

linewidth is typically < 1 MHz. See table 

“Specifi cations Frequency Converted 

Lasers”, page 29, for further specifi cations. 

TA-FHG pro applications 

The TA-FHG pro laser lends itself to ultra 

high resolution spectroscopy, like studies of 

atoms (e.g. Hg, H, ...) and ions (e.g. Mg, Yb, 

Al, In, ...). Looking beyond basic research, 

applications include industrial imaging and 

interferometry, e.g. lens testing, ellipsometry, 

but also photo electron spectroscopy / 

microscopy. Customers in material science 

benefi t from the excellent beam quality and 

the continuous UV laser emission – a point 

which can be of particular relevance for 

applications in lithography, disc mastering, 

glue curing or polymer hardening. 

TA-FHG pro — compact tunable, cw, 

deep UV, single-frequency laser. 

Key features 

· Tunable “deep UV” laser radiation: 

205 .. 270 nm 


· Transversal single-mode beam 

· Single frequency output 

· Linewidth 1 MHz, can be narrowed to 

kHz by active frequency locking 

· Designed for ultra high resolution 

spectroscopy (e.g. Hg, H, Mg, Al) 

Setup for fourth harmonic generation, 

involving two cascaded doubling stages. 




Customized Frequency Converted Laser Systems 

High Power or Exotic Wavelength Solutions from the Specialists 

TOPTICA scientist alligning SHG of fi ber 

amplifi ed diode laser (DL-FA-SHG pro). 

Key features 

· Non-standard wavelengths 

· Fiber amplifi ed diode laser based 

systems 

· Integration of customer sources 

· Sum and Difference Frequency 

Generation (SFG, DFG) 

· OEM solutions 

DL-FA-FHG pro laser system providing 

high power at 280 nm. Omitting the 

second SHG stage, a DL-FA-SHG pro 

system can be realized, e.g. at 556 nm. 


Closing even more spectral gaps 

TOPTICA takes pride in offering the broadest 

wavelength coverage in tunable diode 

lasers. The list of new semiconductor media 

is constantly expanding, and so is the range 

of accessible fundamental and frequency 

converted wavelengths. At TOPTICA, we 

draw on our profound expertise not only 

with laser diodes, semiconductor and fi ber 

amplifi ers, but also on our understanding of 

frequency conversion techniques. Even at 

“exotic” wavelengths, we are able to offer 

customized solutions – in fact, almost any 

wavelength between 205 nm and 3000 

nm can be reached. A few examples 

of special systems that TOPTICA has 

already supplied are described below. We 

are happy to design other solutions upon 

customer request. Contact us and name 

your application, wavelength, power and 

other main characteristics, and we will build 

the laser you need! 

DL-FHG pro systems, e.g. at 285 nm 

Some applications like photo ionization or 

UV spectroscopy need only little power at 

wavelengths which are not within reach 

of TA-FHG pro systems due to the lack 

of tapered amplifi er systems. At such 

wavelengths, a grating stabilized diode 

laser can be quadrupled in a system without 

amplifi cation before the fi rst doubling stage 

(omitting the tapered amplifi er section 

from a TA-FHG pro system). For example, 

TOPTICA offers a DL-FHG pro system which 

provides 0.5 mW - 1 mW laser radiation at 

a wavelength of 285 nm — ideal for photo 

ionization of Mg atoms. 

Typical long term stability of frequency 

converted fi ber amplifi ed diode laser 

systems: Output power of a DL-FA-SHG 

system at 556 nm over one day. 

DL-FA-SHG pro (e.g. at 556 nm) and 

DL-FA-FHG pro (e.g. at 280 nm) 

If high power is required at wavelengths 

which are not covered by the systems 

TA-SHG pro or TA-FHG pro, TOPTICA 

can provide a solution based on fi ber 

amplifi ed, grating stabilized diode lasers. 

These systems are as reliable and as easy 

to operate as their tapered amplifi er (TA) 

counterpart. The DL-FA-SHG, a frequency 

doubled fi ber amplifi ed diode laser, provides 

up to 300 mW at any design wavelength 

within the range of 520 nm – 560 nm and 

features a narrow linewidth of typically 200 

kHz. Adding a second SHG stage, similar 

to the TA-FHG pro system, highest power 

even in the UV regime can be achieved. 

The DL-FA-FHG system is available from 

260 nm – 280 nm (282 nm upon request). 

Output powers > 40 mW can be realized. 

Target applications of such systems are for 

example laser cooling of Yb atoms or Mg 

ions and spectroscopy of Hg ions, all wellknown 

parts of current frequency metrology 

experiments. 

Sum frequency generation (SFG) 

SFG is a powerful tool for producing shortwavelength 

laser radiation. Output beams 

of two different fundamental lasers are 

superimposed in a nonlinear crystal, which 

converts two photons with frequencies ω 1 

and ω 2, respectively, into one photon with 

frequency ω 1 + ω 2. 

In TOPTICA‘s TA-SFG laser system, light of 

a tapered amplifi er system TA pro is coupled 

into an external enhancement cavity, and 

mixed with powerful, short-wavelength 

laser radiation that traverses the nonlinear 

crystal in a single pass. The second laser 

can be a diode-pumped solid state laser, 

such as a frequency doubled Nd:YAG laser 

at 532 nm or any other high power singlefrequency 

source with high output power 

and spectral purity. With this combination, 

wavelengths between 306 nm and 356 nm 

are accessible allowing output power levels 

up to 50 mW. 

Other high power sources that are available 

for SFG are at 488 nm, 514 nm, or 1030 nm 

. Nonlinear mixing with TOPTICA lasers in 

all variations fi lls the spectral gaps in the UV 

to visible spectrum.

Specifi cations Frequency Converted Series 

Comparison of Frequency Converted Solutions 


DL-SHG pro 

Center wavelengths 390 .. 630 nm* 

TA-SHG pro 

(DL-FA-SHG pro) 

323 .. 540 nm* 

(520 .. 561 nm) 

TA-FHG pro 

(DL-FA-FHG pro) 

205 .. 270 nm* 

(260 .. 282 nm) 

Typical power range 1 .. 40 mW 50 .. 400 mW (250 - 800 mW) 1 .. 40 mW (100 mW) 

Typical tuning range 2 - 10 nm 2 - 10 nm 1 - 4 nm 

Typ. mode-hop free 

tuning range up to 

~ 30 GHz ~ 30 GHz ~ 40 GHz 

Typ. linewidth (ms) 

Typ. long term fre- 

500 kHz 500 kHz 1 MHz 

quency change with 

room temperature** 

< 200 MHz / K < 200 MHz / K < 400 MHz / K 

Spatial mode Near diffraction limited 

Beam height 50 mm 

Probe beam output Fundamental light with mW power level 

Polarization linear 

Power stability of 

< 1:1000 

frequency converted 

light 

< 3 %, typ. < 1 %*** 

Residual infrared 

unfi ltered 

< 5 %, fi ltered < 0.1 % 

Warm-up time Few minutes, depending on crystal temperature 

Environment temp. 

operating 

15 - 30°C, Transport: 0 - 40°C 

Humidity Non-condensing 


Power consumption Typ. < 120 W, max. 300 W Typ. < 150 W, max. 300 W Typ. < 150 W, max. 600 W 

Size laser head 

(L x W x H) 

400 x 380 x 90 mm3 400 x 566.5 x 90 mm3 Electronics Double stage 19" rack 

Double stage 19" rack + 

additional rack if required 

*Spectral coverage with gaps. **Under stable laboratory conditions. ***Lower amplitude noise with noise eater option (TA-SHG/FHG). 




Laboratory Electronics 

TOPTICA offers a specialized system of 

electronics (SYS DC) for operating their 

scientifi c diode laser systems. It is a mostly 

analog, modular system, that is optimized 

for lowest possible noise, yet providing a 

certain bandwidth for current regulation, 

modulation and scanning (see pages 32 - 

33). 

It can easily include additional modules for 

laser frequency stabilization and linewidth 

narrowing (see pages 34+). 

Frequency stabilization 

To actively stabilize the laser frequency, 

a reference is needed, that serves as 

frequency discriminator. For absolute 

stabilization and drift compensation, atomic 

absorption lines (see page 54), spectral 

lines of a locked frequency comb (see page 

62), or wavelength meters (see page 52) 

can be used. Relative frequency references 

include high-fi nesse optical resonators or 

quadrature interferometers (see page 42). 


In a closed control loop, the measured 

frequency signal is compared with a set 

value, and a feedback circuit is applied to 

correct for deviations from this set value. 

For a simple “side-of-fringe” lock, the 

difference between set and measured 

frequency is fed back to the laser through a 

PID controller. It can be used, for example, 

to stabilize the laser frequency to the slope 

of an absorption line. 

For “top-of-fringe” locking, modulation/ 

demodulation techniques are used to 

create derivative error signals. The original 

signal has a minimum or maximum at the 

desired frequency. A PID however needs 

a slope to lock to. The derivative shows a 

slope with zero crossing, and such a signal 

can be ideally utilized to stabilize the laser 

via a PID regulator. The PID then acts on 

the laser's control parameters (e.g. current, 

temperature, grating angle) to keep the 

frequency at the extremum of the original 

signal. 

Digital locking 

Digital stabilization electronics offers a 

number of advantages. One advantage is, 

that parameters are entered as numbers. 

Numbers can be easily remembered, 

and after trying out other numbers for 

parameters, one can always go back to well 

proven confi gurations. No adjustment of trim 

pots or soldering of components is needed 

any more. In addition, digital amplifi ers offer 

gain-independent signal delay times, and 

certain digital fi lters by far outmatch their 

analog alternatives. 

The fi rst digital laser stabilization solution 

on the market is TOPTICAs DigiLock 110. 

It extensively takes advantage of its digital 

nature, and in addition implements a 

multitude of functions and intelligence – for 

example for lock detection, relocking and 

to make locking easy and comfortable. See 

for yourself on pages 37-39 or try it on one 

of the trade shows and conferences that 

TOPTICA participates in.

Linewidth narrowing 

The laser linewidth can actually be reduced, 

when a locking circuit responds to frequency 

deviations faster than the frequency 

measurement. In this case high-bandwidth 

locking electronics together with a fast, lownoise 

frequency discriminator need to be 

employed. 

TOPTICA's FALC 110 and DigiLock 110 are 

well suited for this task. Linewidths below 

200 Hz (ms time scale) have been realized 

in TOPTICA's labs, using the FPI 100 as a 

relative frequency reference. Our customers 

have even achieved sub-Hz linewidths 

(8 seconds), combining the FALC 110 or 

DigiLock 110 and high-fi nesse, thermally 

stabilized reference cavities. 

Overview of TOPTICA's locking equipment 

PID 

110 

Description / type Analog PID 

controller 

LIR 

110 

Analog Lock- 

In regulator 

with built-in 

PID controller 

Linewidth broadening 

On the other hand, certain tasks demand 

just the opposite: increasing the laser 

linewidth in a well-controlled way, in 

order to match the spectral shape e.g. to 

Doppler-broadened absorption profi les. 

TOPTICA's Laser Coherence Control unit 

LCC accomplishes just that: the output of 

a tunable diode laser is broadened via a 

dedicated current modulation scheme. 

PDD 

110 

Pound- 

Drever-Hall 

error signal 

generator 

FALC 

110 

Fast analog 

2-channel 

PID 

DigiLock 

110 

Versatile 

digital locking 

solution 

With TOPTICA's modules FALC 110 and 

DigiLock 110 on one side, and the LCC 

on the other side, the coherence length 

and linewidth of ECDL or DFB lasers can 

be tailored over more than nine orders of 

magnitude — from sub-Hertz levels to GHz 

ranges (coherence length 130 000 km .. 

4 cm). 

LaseLock Wavelength 

Meter 

Suited for 

third party 

lasers 

Wavelength 

meter with 

PID option 

iScan 

Low fi nesse 

reference 

etalons with 

locking 

electronics 

Side-of-fringe 

Top-of-fringe 

� 

With PDD � � 

� 

With PDD 

� 

� 

� 

� 

Not applicable 

Locking bandwidth* kHz .. MHz kHz range > 10 MHz ≈ 10 MHz 1 MHz < 100 Hz kHz range 

Modulation 

frequency 

0.6 Hz .. 

14 kHz 

20 MHz** 

17 Hz .. 

25 MHz 

33 Hz .. 

1 MHz 

Not applicable 

Accuracy Depends on reference > 10 MHz 1 MHz 

Signal analysis � 

Relock mechanisms � � � � � 

Computer control � � � 

High voltage output � � � � 

High bandwidth output � � 

Two channel version � 

SYS DC 110 module � � � � � 

Stand-alone � � � 

Catalog page 34 34 35 36 37 41 52 42 

Low budget High end & preferrable 

*Estimated bandwidth depends on the gain and PID settings. **5 – 40 MHz versions available 



Photonicals TM : Laboratory Electronics 

SYS DC 110 Series 

Laser Driver and Frequency 

Stabilization Modules 

DC 110 diode laser supply racks 

The diode laser supply rack DC 110 serves 

as a general basis for all plug-in modules 

of the SYS DC 110 series. It provides the 

necessary supply and HV voltages via an 

integrated backplane. The backplane also 

enables the communication between the 

different modules, provides data lines for 

the monitor display, and – via the DCB 110 

analog interface – allows for remote control 

of the modules by external devices. 

The rack is available as 12", 19" and 

double-stage 19" version, housing 3, 5 and 

10 units in addition to the DC 110 monitor, 

respectively. In its basic confi guration, the 

rack is equipped with a DC 110 Monitor 

Unit, Current Control module DCC 110, 

Temperature Control module DTC 110 and 

Scan Control SC 110. Other modules can 

be fl exibly added, depending on the number 

of lasers to be controlled, or for frequency 

stabilization tasks. 


DC 110 monitor unit with LCD display 

The monitor unit of the Diode Laser Controller 

DC 110 displays the most relevant laser 

parameters at a glance. Actual and pre-set 

values of current and temperature of up to 

three laser systems are indicated on a fourline 

LCD unit. Other important values, e.g. 

adjusted maximum current or operating 

temperature range, can also be shown. 

The monitor unit features a power-up switch 

for the control rack, and an extra button to 

enable or disable laser operation. Internal 

safety circuits are included to prevent 

damage of the laser diode in case of power 

failure. An RS 232 interface is provided for 

reading out parameter values. 

Specifi cations and safety features 

DC 110 supply rack 

Linearly regulated, low noise power 

supply, thermally protected 

Automatic mains voltage detection 

(100 - 120 or 220 - 240 VAC, 

50 - 60 Hz) 

Very low noise transformers 

All supply voltages short circuit 

protected 

Interlock socket for external 

interlock circuit 

Specifi cations DC 110 monitor 

Four-line LCD dot matrix display 

Push buttons and rotary encoder 

for display selection of the operating 

parameters of up to 3 diode lasers 

Power supply ON/OFF safety key 

switch 

RS 232 interface for laser parameter 

monitoring 

Monitor “sleep” function

DCC 110, DTC 110, SC 110, DCB 110 

Standard Electronics 

Standard electronics for TOPTICA's 

scientifi c diode lasers 

Based on the rack and monitor, TOPTICA 

offers the perfect driving system for all 

scientifi c diode lasers. Besides the monitor 

unit, standard systems include the needed 

number of current, temperature and scan 

control modules (DCC 110, DTC 110, and 

SC 110). 

The DCC 110 modules are ultra low noise 

analog current control modules, that 

deliver currents up to 100 mA, 500 mA or 

3000 mA. BNC input and output connectors 

are provided for external modulation of the 

laser current, and for monitoring the internal 

photodiode signal of a laser diode. 

The DTC 110 is a low-noise temperature 

control module, that regulates the laser 

diode temperature with a precision of 

approx. 1mK. It can be used to sweep 

the emission wavelength of DFB diodes. 

Its bipolar control allows fast and stable 

regulation. Special versions are available 

for DFB diodes and for regulating the 

temperature of nonlinear crystals. 

The SC 110 is optimized for driving external 

cavity diode lasers, DFBs or scanning 

Fabry-Perot interferometers (FPI 100). It 

can be confi gured in HV (150 V) or LV (24 V) 

output. The feed forward feature controls 

the diode current during a Piezo scan to 

maximize the mode hop free tuning range 

of external cavity lasers. 

Specifi cations DCC 110 Specifi cations DTC 110 Specifi cations SC 110 Specifi cations DCB 110 

Output current range: 

0 ... ± 100 mA (DCC 110/100 mA) 

0 ... ± 500 mA (DCC 110/500 mA) 

0... ± 3 A (DCC 110/3A) 

Laser stabilization to constant 

operating current or constant light 

power 

Fine tuning of output current or 

laser power via precision trimmers 

External modulation of output 

current up to 7 kHz (-3 dB) 

Numerous protection circuits for 

the laser diode, including excess 

voltage clip 

RMS wideband noise and ripple, 

5 Hz .. 1 MHz: 

200 nA (DCC 110/100 mA), 

1 µA (DCC 110/500 mA), 

10 µA (DCC 100/3 A) 

Output current: 0 .. 5 A, 

maximum output power: 30 W 

Temperature selection range: 

0 °C to 50 °C or 

-50 °C to +150 °C 

for non-linear crystals 

Limits of operating temperature 

adjustable via precision 

trimmers 

Typical long-term stability with 

TOPTICA laser heads: 

1 .. 2 mK (RMS) 

Remote control of set 

temperature possible via 

backplane and DCB 110 

interface 

Relevant parameters available 

at DC 110 monitor 

Frequency 0.01 Hz to 10 kHz, 

coarse frequency range switch 

and continuous fi ne tuning 

High voltage mode: maximum 

amplitude 150 V up to 10 kHz, 

adjustable offset -5 .. +150 V 

Low voltage mode: maximum 

amplitude 24 V up to 10 kHz, 

adjustable offset -12 .. +12 V 

Sawtooth signals with 

symmetric or asymmetric 

ramp, variable degree of 

symmetry (e.g. for generation 

of steep slopes) 

TTL trigger synchronization 

output, adjustable trigger time 

delay 

Adjustable feed forward for 

simultaneous control of laser 

current and grating angle 

The DCB 110 is an analog interface board, 

that provides access to the backplane of 

the rack. It enables the user to monitor 

and control important parameters of the 

modules in the rack. 

Standard systems can easily be extended 

with TOPTICA's sophisticated locking 

electronics (see pages 34 - 39). 

Sub-D25 connector to 

access all relevant backplane 

parameters 

BNC-Connector for additional 

access to selected backplane 

lines (e.g. remote scan control 

or remote temperature control) 

Sensitivity of electrical 

parameters 10 mA/V (DCC 

110, 100 mA and 500 mA), 

100 mA/V (DCC 110 / 3 A), 10 

°C/V (DTC 110) 

Depending on the signal, a line 

is buffered or used as read/ 

write line 

DCB 110 AUX: additional 

supply port for auxiliary DC 

supply voltages (- 12 V, - 5 V, 

GND, +5 V, +12 V) 




PID 110 

PID Regulator 

PID 110 — fl exible proportional inte gral-differential 

regulator module 

The PID 110 is a proportional integral differential regulator 

for frequency stabilization of tunable diode lasers (DL 100, 

DL DFB, DLX, etc.). It accomplishes side-of-fringe 

locking e.g. to the 

edge of an atomic 

resonance, or to the 

slope of a cavity transmission 

peak. Sideof-fringe 

stabilization 

is employed in case 

a discriminator signal 

can be directly derived 

from the measurement 

signature. 

The PID 110 module offers fl exible handling of all relevant 

control parameters and can be utilized both for HV (Piezo 

actuators) and LV (laser current) control tasks. Common 

applications are active length control of the frequency 

doubling cavity of the SHG 110 system (see pages 24 - 29), 

or RF sideband locking to narrow absorption signatures in 

conjunction with the Pound-Drever-Hall Detector PDD 110 

(see page 35). 

Specifi cations PID 110 

P, I, D parameters of the control loop individually 

adjustable by precision trimmers 

Adjustable regulator set point for side-of-fringe 

stabilization 

Automatic relock feature 

External modulation input or internal synchronization 

with Scan Control SC 110 possible 

SubD9-connector for photo detector signal input 

BNC-connectors for signal monitor, regulator output 

(-5 V .. +150 V, max. 30 mA) and external modulation 

input (-5 V .. +5 V) 


LIR 110 

Lock-In Regulator 

LIR 110 — lock-in regulator module 

The lock-in regulator LIR 110 accomplishes top-of-fringe 

frequency stabilization to an absorption signature (e.g. 

an atomic resonance or interferometer transmission peak), 

utilizing a modulation technique with phase-synchronous 

detection. Here, 

the laser frequency 

is modulated, the 

detector signal is 

multiplied with the 

modulation input 

signal, and the 

resulting product 

signal (“lock-in 

signal”) represents 

the derivative of the 

detector signal with respect to the laser frequency. The zerocrossing 

of the derivative corresponds to the maximum or 

minimum of the detected signal structure. 

The LIR 110 module comprises the modulation source (sine 

or sawtooth), an input signal amplifi er, the phase-sensitive 

detection unit and a PID regulator. The unit can be used 

with any of TOPTICA's tunable diode lasers. 

Specifi cations LIR 110 

For top-of-fringe frequency stabilization 

Modulation frequency 0.6 Hz - 14 kHz 

Modulation amplitude: maximum ± 5 V 

Adjustable lock-in bandwidth (16 mHz – 16 kHz) 

Variable input amplifi er gain (1 – 3000) 

Various BNC connectors, e.g. for signal input, signal 

monitor, regulator output 

(max. ± 13 V), modulation output etc. 

Potentiometer for continuous phase adjustment 

Proportional, integral and differential distribution 

continuously adjustable (separately or combined)

PDD 110 

Pound-Drever-Hall Detector 

PDD 110 — unique Pound-Drever-Hall detector 

module 

The Pound-Drever-Hall Detector PDD 110 is used to generate 

a low noise error signal, that can be used to lock the laser 

frequency to absorption or transmission peaks. The error 

signal is obtained by fast modulation of the laser frequency 

and phase sensitive demodulation of the spectroscopy 

signal. The PDD 110 features an internal HF modulation 

source with variable output amplitude that can be attached 

to the DL-Mod option of TOPTICA‘s tunable diode lasers 

or to electro- or acousto-optic modulators (EOMs, AOMs). 

The PDD 110 also comprises a detector section with a lownoise 

mixer and adjustable phase offset. 

Typical applications of the PDD 110 are Pound-Drever-Hall 

frequency stabilization (R.W.P. Drever, J.L. Hall, F.V. Kowalsky 

et al., Appl. Phys. B 31 (1983) 97) and linewidth reduction of 

lasers using an external resonator as a reference, as well as 

frequency modulation spectroscopy or modulation transfer 

spectroscopy. For locking, the derived error signal serves as 

input for a PID regulator, e.g. PID 110 or FALC 110. 

Specifi cations PDD 110 

Fixed-frequency internal oscillator (20 MHz standard, 

adjustable ± 2 MHz,customized frequencies between 

5 and 40 MHz on request) 

HF output amplitude ± 1.2 V (11.6 dBm) @ 50 Ohm 

Second harmonics suppression typ. > 30 dB 

Phase adjustment via front panel potentiometer, 

0° .. 300° 

Phase error signal bandwidth up to 1 MHz 

(higher bandwidth upon request) 

Also available in a two-channel version as 

PDD 110 / Dual 

In TOPTICA's frequency converted laser systems (see 

pages 22 - 29), the PDD 110 module is used to keep the 

frequency doubling cavity resonant (correctly adjusted cavity 

length) with the fundamental laser. The modulation is applied 

directly to the AC coupled modulation input of the laser 

head. The refl ection 

of the cavity is 

detected with a 

fast photo diode 

and demodulated 

in the PDD 110. 

The resulting error 

signal is fed into the 

PID 110 controller, 

and the PID's HV 

output is used to 

control the doubling cavity's length via a Piezo-mounted 

mirror. The resonantly enhanced light in the doubling cavity 

can then be effectively frequency converted. 

Pound-Drever-Hall detection scheme. 

Pound-Drever-Hall error signal. 




FALC 110 

Fast Analog Linewidth Control 

FALC 110 — highest bandwidth laser locking 

The Fast Analog Linewidth Control FALC 110 is a high-speed 

control amplifi er designed for advanced laser frequency stabilization 

tasks, such 

as diode laser linewidth 

re duction, highbandwidth 

frequency 

locking, or the real ization 

of auxiliary highbandwidth 

control 

loops. The module 

can be used with any 

of TOPTICAs tunable 

diode lasers such as the DL 100, the DL pro and the 

DL DFB. 

The design of the FALC 110 was optimized with respect 

to a fast circuit layout: At 10 MHz there are less than 45 

degrees of excess phase delay, and the -3dB bandwidth of 

the fastest signal path reaches 100 MHz. 

Specifi cations PID 110 

PID regulator with less than 15 ns signal delay 

Phase delay ~ 90° @ 45 MHz 

Wide range of control parameters, manually adjustable 

Two high-speed differential inputs 

Low-voltage output for fast current control 

Additional slow integrator for drift cancellation via grating 

Piezo or laser temperature 

Sub-Hz laser linewidths demonstrated 


The concept behind this regulator by far exceeds that of 

conventional PID controllers. Its novel circuit design allows 

for the individual selection of multiple corner frequencies (10 

Hz .. >10 MHz) over three decades each. The controllers 

response function can therefore be ideally tailored to each 

individual laser diode system to achieve the tightest lock 

possible. 

The FALCs‘ fast PID regulator output normally controls 

the driver current of an external-cavity or DFB diode laser. 

Additionally, a slow integrator serves to cancel out longterm 

drifts of the laser frequency, by acting either on the 

grating Piezo of an ECDL, or on the current or temperature 

of a DFB laser. 

The concept works: engineers at TOPTICA were able to lock 

two individual DL pro lasers to one common Fabry-Perot- 

Interferometer FPI 100 with a resulting beat width of less 

than 300 Hz. And researchers at the Max-Planck Institute 

for Quantum Optics in Garching succeeded in locking two 

diode lasers to two individual high fi nesse ULE cavities, with 

a resulting beat width of less than 0.5 Hz (Janis Alnis et al., 

Phys. Rev. A 77, 53809, 2008). 

Beat measurement of two independent ECDLs locked 

to two high fi nesse ULE cavities, one of them using 

FALC 110. The beat width was measured to be less than 

0.5 Hz over 8 s. The inset shows the phase stability of 

the beat note fi ltered with a 100 Hz low pass fi lter (Janis 

Alnis, MPQ Garching).

DigiLock 110 

Digital Feedback Controlyzer for Laser Locking and Analysis 

Laser stabilization easier than ever 

Selfmade solutions for stabilization tasks often involved a 

heap of electronics, soldering, try and error, and frustration. 

DigiLock 110 is TOPTICA's versatile solution: a digital locking 

module, that is fl exible to solve locking tasks with perfection, 

and yet easy to use thanks to intelligent software control 

with a clear and comfortable graphical user interface. 

In addition to standard functions like side-of-fringe and topof-fringe 

locking, the DigiLock 110 also offers computer 

control over the laser, signal visualization, and signal 

analysis. In auto lock mode, the user can simply modify 

the scan parameters of the laser by dragging the mouse 

and zoom into a feature of a spectrum on the software 

oscilloscope screen. With the feature displayed on the 

screen, one can then simply “Click & Lock” to any peak or 

slope. For optimizing lock parameters, spectral analysis of 

error signals can be performed, as well as measurements of 

actuator transfer functions. 

DigiLock 110 — fl exibility & perfection 

Flexibility and per fection 

both orig inate 

from the under lying 

tech nology: the 

hardware is based 

on a fast FPGA (Field 

Programmable Gate 

Array). Together 

with numerous 

high speed and 

high precision AD and DA converters, the FPGA provides 

the needed fl exibility with suffi cient bandwidth. The large 

bandwidth, in fact, allows one, to even substantially reduce 

diode laser linewidths: using two DigiLocks 110 to lock two 

DL pro to one FPI 100, a beat width of less than 300 Hz was 

measured. And as was previously shown with FALC 110, 

it was possible to also achieve sub-Hz linewidths with the 

DigiLock 110, utilizing the designated analog bypass. 

Intelligence in laser stabilization 

The DigiLock 110 tries to support the laser 

user, wherever possible. In addition to the 

aforementioned features, the DigiLock 

can be confi gured to detect whether the 

frequency is locked – locked in general – or 

even whether the laser is locked to the right 

position. It is for example possible to defi ne 

a voltage window in a Doppler broadened 

spectroscopy signal, that contains only one 

transition of the corresponding Doppler free 

signal, thus allowing the laser to only lock 

to this particular peak. Once out of lock, 

the DigiLock can start searching, at pre-set 

speed, over a confi gurable width, until the 

voltage lies within the locking window again 

and the laser is tightly locked. The automatic 

relock makes frequent manual readjustments 

obsolete. 

Multiple DigiLocks and remote control 

The latest software version of the DigiLock 110 allows 

control of up to four DigiLocks from one computer. Also, 

remote control via TCP/IP is now available, so the DigiLock 

can be integrated in automated experiments and controlled 

by other hard- and software. 




DigiLock 110 

Digital Feedback Controlyzer for Laser Locking and Analysis 

Scan Generator 

Multi Channel 

‘Oscilloscope’ 

Dual PID + P 

Pound-Drever-Hall 

Lock-In 

Spectrum 

Analysis 


Laser Control 

Controller Design 

Click & Lock 

AutoLock & ReLock 

Computer Control 

Network Analysis 

Example feature 1: 

Click & Lock: The user can click on the slope position or on 

any peak or valley, and the laser scans to this position and 

activates the lock. 


AutoLock & ReLock: The DigiLock controls multiple PIDs 

and an analog P component simultaneously. The user can 

defi ne voltage windows to allow the DigiLock to lock to 

certain features only, and initiate a search if the voltage lies 

outside the window. 


Spectrum and Network analysis functionality: The DigiLock 

can show the spectrum of an error signal, for example 

to reveal oscillations. Actuator transfer functions and 

bandwidth can be measured by sweeping a modulation to 

an actuator and measuring the response in amplitude and 

phase. 

The picture shows a measurement of the DL pro Piezo 

resonance frequency.

Specifi cations DigiLock 110 

Functionality 

Scan function 

Value Unit Comment 

Scan frequency 0.1 - 33 x 106 Hz Bandwidth limited on some channels 

Waveform types 

PID function 1 

Sine, triangle, square, sawtooth 

Signal latency 200 ns ADC and DAC latency included 

Parameters 

PID function 2 

P, I, D, I cut-off 

Signal latency 200 ns ADC and DAC latency included 

Parameters 

Analog P function 

P I, D 

Bandwidth 

Lock-In function 

21 MHz (-3 dB, -200° phase) 

Modulation frequency 12 - 781 x 103 Pound-Drever-Hall function 

Hz 

Modulation frequency 1.56, 3.13, 6.25, 12.5, 25 MHz 

General Value 

Supply voltage ± 15 V 

Supply current +15 V (typ) 700 mA 

Supply current -15 V (typ) 200 mA 

Input 

channels 

Resolution 

(bit) 

Sample 

rate (Hz) Bandwidth 

(-3 dB) (Hz) Range 

(V) 

Impedance 

(Ohm) 

Comment 

Main in 14 100 M 14 M ± 2.1 50 

Input signal at has to be between 

± 3.5V; it can be shifted with the 

and amplified with the PGA 

Aux in 14 100 M 15 M ± 2.1 50 

Precise in 16 200 k 50 k ± 2.0 10 k 

DCC Iact 16 100 k 15 k ± 13.1 40 k SYS DC 110 backplane 

DTC Tact 16 100 k 15 k ± 13.1 40 k SYS DC 110 backplane 

AIO 1 in 16 100 k 15 k ± 12.5 47 k Normally used as output 

AIO 2 in 16 100 k 15 k ± 12.5 47 k 

Sum in 27 M ± 1.0 50 Bandwidth between and 

Output 

channels 

Resolution 

(bit) 

Sample 

rate (Hz) Bandwidth 

(-3 dB) (Hz) Range 

(V) 

50 Ohm 

driver 

Comment 

Main out 14 100 M 19 M ± 1.0 Yes Sum of and Analog P branch 

Aux out 14 100 M 19 M ± 1.0 Yes 

SC 110 out 21 100 k 18 k ± 6.5 No 

SYS DC 110 backplane; 

amplifi cation by 15 with SC110 

DCC Iset 21 100 k 18 k ± 6.5 No SYS DC 110 backplane 

DTC Tset 16 100 k 18 k ± 6.5 No SYS DC 110 backplane 

AIO 1 out 16 100 k 16 k ± 6.5 No 

AIO 2 out 16 100 k 16 k ± 6.5 No Normally used as input 

Error out 20 M ± 1.7 Yes 

TRIG 0, 2.6 Yes 

Error out = ( + ) x Gain/2; 

bandwidth between and 




LCC 

Laser Coherent Control 

Stand-alone unit for linewidth broadening 

The Laser Coherence Control unit LCC serves to broaden 

the spectral line profi le of an ECDL or DFB laser in a wellcontrolled 

way, 

maintaining both 

frequency control 

and tuning properties 

of the laser. The 

module allows the 

user to match the 

laser linewidth e.g. to 

Doppler-broadened 

absorption lines of 

gaseous molecules or atoms, whilst the laser remains tuned 

to the respective resonance frequency. 

The compact stand-alone unit comprises a broadband 

modulation source with up to 28 dBm (0.6 W) output, 

which can be attenuated in steps of 1 dB (0 .. –61 dB). 

The output is fed to an AC-coupled modulation port of a 

DL 100, DL DFB or DL pro based laser head (“DL MOD” 

option, see page 13). Varying the modulation output allows 

the researcher to tailor the laser's coherence length to the 

needs of the individual experiment. 

Specifi cations LCC 

Stand-alone module with separate power supply 

Maximum power: 0.6 Watt @ 50 Ω (= 28 dBm) 

Attenuation: 0 .. –61 dB, via dip switch board 

Output spectral bandwidth: 10 MHz .. 200 MHz 

Allowed voltage standing wave ratio at output (VSWR): 

1 .. ∞ 

Connector type: SMA 


Nine decades of coherence control 

Applications of the LCC include optical pumping of 

metastable Helium-3 (1083 nm, linewidth 2 GHz), or seeding 

of high-power fi ber amplifi ers whilst avoiding unwanted 

nonlinear effects. Using the LCC in conjunction with an 

855 nm DL DFB laser, spectral widths up to 3 GHz were 

realized, corresponding to a minimum coherence length 

of only 4 cm. This represents an increase of more than 3 

orders of magnitude, compared to regular laser operation. 

Considering that, on the other side, TOPTICA's highbandwidth 

locking modules FALC 110 and DigiLock 110 

have been shown to achieve sub-Hertz linewidth values, 

the range of laser coherence control even extends over 

more than nine orders of magnitude (coherence length 

130000 km .. 4 cm). 

Mode spectrum of a TOPTICA DL DFB laser. Blue: 1 MHz 

linewidth without modulation, red: linewidth broadening 

to 900 MHz using the LCC. 

Linewidth of an 855 nm DL DFB, for 

different LCC output amplitudes.

LaseLock 

Lock-box for Laser Frequency Stabilization 

Frequency locking of any tunable laser 

The LaseLock has been designed for precise frequency 

stabilization of any tunable laser source. It can be used both 

with TOPTICA‘s diode lasers and with third party lasers. 

Optical resonators or atomic absorption signatures may 

serve as frequency references. Vice versa, optical resonators 

also can be stabilized to a given laser frequency. The unit 

comprises a PID regulator for side-of-fringe stabilization, 

LaseLock block diagramm. 

Specifi cations LaseLock 

Signal input User-selectable impedance (Standard 10 kΩ) 

Amplifi er gain 1 .. 3000 

Bandwidth 5 MHz 

2 seperate inputs: generation of signal difference or ratio 

Outputs HV output: 150 V, 150 mA, BNC 

HF output: 1 MHz, 50 Ohm, BNC 

Scan trigger output: TTL 

Scan monitor output: ±10 V @ 1 kΩ 

Multichannel monitor: ± 10 V @ 1 kΩ, ± 5 V @ 50 Ω 

Lock-In amplifi er Modulation frequency: 33 Hz .. 1 MHz (sine) 

2f / 3f demodulation, user selectable 

Phase adjustment: 0 .. 360° 

Filter cut-off frequency 33 Hz .. 100 kHz 

Twin PID regulator 2 independent PID regulators 

(e.g. for Piezo & current control) 

P, I, D coeffi zients individually adjustable 

Bandwidth: 1 MHz 

Second order low-pass fi lter (e.g. for mechanical 

resonance suppression) 

Scan generator Output frequency, triangular shape: 

10 mHz ..10 kHz 

Operating voltage 100…120 V / 220 .. 240 V AC, 

50 .. 60 Hz (auto detect) 

Housing dimensions 88 mm x 260 mm x 373 mm (H x W x D) 

Search logic Discriminator logic for identifi cation of valid search ranges 

Automatic relock upon loss of input signal 

as well as a lock-in regulator (frequency modulation with 

phase-synchronous detection) for top-of-fringe locking 

tasks. 

Applications include laser fre quency stabilization to an 

atomic resonance line, e.g. in combination with TOPTICA‘s 

spectroscopy module CoSy (see page 54), or stabilization 

of an optical cavity (Fabry-Perot resonator or ring cavity) to 

the emission frequency of a laser source. 

Universal stand-alone lock-box. 

Key features 

· Compact, stand-alone locking 

electronics for diode lasers, dye lasers, 

Ti:Sa lasers, or optical resonators 

· Side-of-fringe and top-of-fringe 

stabilization 

· Two independent PID regulators 

· High-voltage output 

· Automatic relock feature with “search” 

function and lock point validity 

detection 

· Multi-channel monitor for display of 

regulator signals 




iScan 

Laser Mode Monitor and Frequency Control 

iScan measurement head. 

iScan control rack. 

Key features 

· Fast and precise scanning of tunable 

lasers 

· Scan linearization 

· Stepping and stabilization to arbitrary 

wavelengths 

· Static and dynamic mode surveillance 

· For diode lasers, fi ber lasers, dye 

lasers, solid state lasers 

· Upgrade of existing laser systems 

possible 

Design of the optical interferometer 

within the iScan head. A precision 

temperature controller (TC) serves 

to maintain the optical path lengths 

constant. 


Continuous frequency reference 

TOPTICA's iScan comprises a patented 

interferometer for fast and precise frequency 

control of tunable lasers. The laser 

frequency can be scanned in any desired 

manner, including purely linear and stepwise 

frequency variations. In addition, the 

laser can be stabilized to any requested 

frequency, including “off-resonant” values 

where no atomic transition or other 

reference is available. 

The principle of the iScan is based on 

quadrature signal generation within a lowfi 

nesse, temperature stabilized Fabry-Perot 

etalon. A wedge-shaped beam splitter in 

the iScan measurement head generates 

two low intensity probe beams (PB A and 

PB B), which enter the etalon under slightly 

different angles. The etalon produces a pair 

of interference signals with a relative phase 

of π/4 (90°). These signals are detected by 

two photodiodes (a and b) and combined 

into a quadrature signal, the phase of which 

is a linear function of the optical frequency. 

Two additional photodiodes (I a and I b) behind 

the etalon provide normalization values. 

Quadrature signals represent mode 

properties 

The normalized quadrature signal can be 

visualized on an oscilloscope operating 

in XY-mode: when the laser frequency is 

scanned, each of the photodiodes a and 

b detects an oscillating, near-sinusoidal 

signal. The XY-display yields a circle, where 

the momentary phase angle corresponds 

to the laser frequency. The completed 

circumference of the circle represents the 

range of the frequency scan. A full circle 

indicates a frequency shift equal to the FSR 

of the interferometer. The radius additionally 

reveals information on the mode properties 

of the laser. A mode-hop free scan yields 

a smooth curve, whereas a mode-hop 

within the scan range is recognized by 

a sudden jump across the circle. Other 

mode characteristics, such as multi-mode 

operation or coherence reduction due 

to optical feedback, also show distinct 

signatures. The iScan can thus be employed 

as an accurate “on-line mode-monitor”. 

Quadrature signals and corresponding mode signatures (see text for explanations).

Scan linearization and frequency 

locking 

For frequency regulation, the interferometrically 

measured frequency is compared 

to a user-selected target frequency. Analog 

electronics generate an error signal, which 

is processed by a PID regulator and fed 

back to the laser (e.g. Piezo and current of 

an ECDL, or temperature and current of a 

DFB laser). 

The iScan not only accomplishes a precise 

frequency “lock” but also compensates for 

perturbations which would infl uence the 

laser frequency otherwise, e.g. temperature 

changes, mechanical drifts or vibrations. 

Furthermore, the laser frequency remains 

regulated even during a wavelength scan. 

This can be exploited to generate highly 

linear scans and precisely address the 

target wavelength. 

Water absorption spectrum, recorded with a DL 

100 with iScan frequency control. The lower trace 

shows the wavelength variation, the upper trace the 

corresponding absorption spectrum. An initial linear 

37 GHz scan sweeps the laser wavelength across 

two absorption lines. Thereafter, the frequency is 

tuned in four discrete steps to the fi rst resonance, 

an “off-line” value, the second resonance and the 

start of the scan range, respectively. 

iScan applications 

The iScan lends itself to frequency control 

of semiconductor lasers, fi ber lasers, solid 

state lasers, dye lasers and frequency 

doubled laser systems. For operation, 

a weak probe beam (P ≤ 1 mW) is 

coupled into the measurement head via 

a polarization-maintaining single-mode 

fi ber. A complementary software package 

enables hands-on control via a standard 

PC (RS 232 or USB interface). 

Applications of the iScan include wavelength 

drift surveillance, optimization of 

tuning parameters and long term aging 

control of tunable lasers, phase-shifting 

interferometry as well as laser cooling, 

LIDAR seeding, and frequency control in 

precision cw-terahertz experiments. 

Tuning curve of a DFB laser 

with iScan control. A linear 

scan of +0.6 THz is followed by 

a scan of –1.2 THz, before the 

frequency returns to its initial 

value. 

Wavefront of a lens 

(top) and a wafer 

(bottom), recorded 

with phase-shifting 

interferometry. 


Input wavelength 400 .. 1100 nm (standard version), 1100 .. 1700 nm (IR version) 

Input beam SM/PM fi ber, minimum power 20-100 µW (wavelength dependent) 

Error signal generation Up to 1 MHz bandwidth 

Relative frequency resolution 1 MHz typ., customized version with higher resolution on request 

Long-term frequency stability Better than 20 MHz (3 hours, laboratory environment) 

Typical tuning speed 50 GHz/s (DFB lasers) 

Random wavelength locking Possible, precision typ. 1 MHz, no grid! 

Housing dimensions iScan head 80 x 80 x 114 mm³ (H x W x D), control rack 134 x 300 x 445 mm³ 

Patented technology US 6,178,002 

*In a laboratory environment. Can be signifi cantly improved with reference spectra, e.g. using the CoSy module (see page 54). 




Laboratory Tools 

Laser Diodes 

Widest Selection of FP, AR, DFB Diodes 

and Amplifi ers 

Name your wavelength — we provide it 

TOPTICA offers a large variety of wavelength-selected 

single-mode laser diodes 

from stock. You will fi nd not just standard 

wavelengths, but also “pearls” for which we 

are the only supplier in the world. 

TOPTICA can integrate any diode from the 

stock lists into a tunable diode laser system, 

however, you can also purchase the diode 

separately. Each type of diode is carefully 

tested in an external cavity, DFB or amplifi er 

confi guration and qualifi ed with respect to 

tuning range, spectral and spatial mode 

characteristics, and power limits. Results 

are disclosed on request in a detailed 

datasheet. 


Should you not be able to fi nd your 

wavelength of choice, simply call us — and 

chances are high that we can provide an 

adequate diode within a very short lead 

time. 

Details about FP, AR and DFB-type diodes 

are found on page 5 of this catalog. 

Regularly updated stock lists of all of our 

diode types are accessible via our web site 

www.laser-diodes.com. 

Broadest wavelength range from FP, AR, 

DFB diodes and amplifi er chips. 

Key features 

· Unique selection of FP, AR, DFB diodes 

and tapered amplifiers on stock 

· Diodes extensively tested and qualified 

· Regularly updated internet stock lists: 

www.laser-diodes.com

ColdPack 

TO-3 Adapter with TECs and Thermistor 

Thermal control made easy 

The ColdPack adapter-kit incorporates 

any standard 9 mm or 5.6 mm laser diode 

housing into a TO-3 style package with 

integrated thermistor and thermoelectric 

coolers. 

For a variety of applications, simple heat 

sinking of a laser diode is not sufficient 

but full thermal control of the laser diode is 

required. However, standard laser diodes 

are mostly built into 9 mm (SOT-148) or 

5.6 mm (TO-18 or MG) packages, and 

are not equipped with integrated coolers. 

To overcome this limitation, TOPTICA has 

designed the patented ColdPack adapterkit: 

four thermoelectric elements serve to 

Technical data 

The ColdPack includes 4 thermoelectric modules in series. 

Q max 

T min 

T max 

U max 

I max 

11.2 W 

0° C 

50° C 

17.2 V 

1.2 A 

stabilize the laser temperature or rapidly 

cool/heat the diode, as required by the 

application in mind. 

The actual temperature can be monitored 

online by means of an integrated thermistor 

(10k NTC). The built-in laser diode can 

easily be exchanged. For ultra-precise 

temperature control, we recommend using 

the ColdPack in conjunction with our Diode 

Laser Temperature Control DTC 110 (see 

page 33) to achieve thermal stability of 

1 mK and below. 

The ColdPack lends itself particularly to 

frequency tuning of Distributed Feedback 

(DFB) laser diodes (see page 5). 

Effective resistance R of thermistor (10k NTC): R = R 0 exp (β/T – β/T 0) 

R 0 

10 kΩ 

β 3895 K 

T 0 

298 K 

T Temperature in Kelvin 

Images left to right: 

ColdPack dimensions. 

TO-3 adapter with integrated 

TECs and thermistor. 

Key features 

· Precise temperature stabilization 

and rapid cooling / heating 

· Suitable for frequency tuning of 

DFB laser diodes 

· Adapter kit for 9 mm or 5.6 mm 

laser diodes 

· Patented design 

(DE19926801) 



Photonicals TM : Laboratory Tools 

APP J 

Adjustable Anamorphic Prism Pair 

APP J, anamorphic prism pair for 

fl exible laser beam shaping. 

Variable expansion and 

compression ratio. 

Key features 

· Beam shaping for diode lasers, e.g. for 

increased fi ber coupling effi ciency 

· Variable magnifi cation or compression 

ratio (2 .. 5) 

· Beam aperture 8 mm 

· No angle shift of output beam 


Beam shaping with an anamorphic 

prism pair. One axis of an elliptical 

beam is magnifi ed or compressed, 

the other axis remains unchanged. 


Rendering diode laser beams circular 

Diode lasers usually feature an elliptical 

beam profi le. Often, however, a circular 

beam shape is required, e.g. for modematching 

to an external resonator, or to 

obtain a supreme fi ber coupling effi ciency. 

The APP J is an adjustable anamorphic 

prism pair which circularizes an elliptical 

beam, by either expanding or compressing 

one of the beam axes. Since each laser 

diode exhibits its own individual beam 

ellipticity, the APP J offers a magnification 

or compression ratio continuously variable 

between 2 and 5. The result is a perfectly 

circular beam for all kinds of diode lasers. 

An outstanding feature: the output beam 

remains exactly parallel to the incident 

beam with a constant displacement of 

8 mm, independent of the magnifi cation or 

compression ratio. 

Available prism pairs 

Article 

number 

Description Wavelength 

(nm) 

The APP J is designed for p-polarized 

light (polarization parallel to the plane of 

incidence), ensuring maximum transmission 

due to (near-) Brewster conditions on one 

side and a high-quality AR-coating on the 

other side of each prism. The housing 

can easily be fi xed on any standard mirror 

mount or post. 

Compression / 

magnifi cation 

Transmission 

(typ.) 

APP J 390-420 Adjustable prism pair 390 – 420 2:1 – 5:1 95 % 

APP J 600-1100 Adjustable prism pair 600 – 1100 2:1 – 5:1 95 % 

APP J 1100-1500 Adjustable prism pair 1100 – 1500 2:1 – 5:1 95 %

Optical Isolators 

Feedback Protection for Diode Lasers 

Optical isolation — why? 

Diode lasers, in particular highly coherent, 

spectrally narrow external-cavity or DFB 

laser systems, are sensitive to optical 

feedback from refl ective surfaces. Weak 

back-refl ections from lenses, mirrors and 

optical fi bers or from other laser beams 

(e.g. optical amplifi ers) adversely affect 

the laser's coherence. Even worse, strong 

feedback may lead to irreversible damage 

of the laser diode itself. We therefore 

recommend the use of optical isolators to 

protect your diode laser from unwanted 

feedback. 

Options 

Principle of operation 

An optical isolator permits the transmission 

of polarized light in one direction only. Its 

principle is based on the Faraday effect, i.e. 

the rotation of the light polarization axis in a 

crystal within a strong magnetic fi eld. The 

main components are an entrance polarizer, 

then the Faraday rotator – typically a 

terbium gallium garnet (TGG) crystal inside 

a permanent magnet – and an exit polarizer 

oriented at 45° relative to the fi rst polarizer. 

Since light from diode lasers is usually 

linearly polarized, the orientation of the 

entrance polarizer can be made to match 

the polarization axis. The Faraday element 

then rotates the polarization axis by 45°, 

hence the light passes the second polarizer 

without attenuation. As the Faraday effect 

is independent of the direction of light 

propagation, stray light travelling backwards 

is highly suppressed by the two polarizers. 

Single-stage isolators: extinction ratio > 30 dB 

Recommended for fi ber coupling of DL100, DL pro, DL DFB lasers into angle 

polished fi bers 

Feedback protection during resonator alignment (e.g. FPI) 

Double-stage isolators: extinction ratio > 60 dB 

Recommended for seed laser protection in MOPA confi gurations or SHG setups 

Fiber coupling of TA, DLX, BoosTA 

Fiber coupling of any laser into PC polished fi bers or fi ber-optic beam splitters 

TOPTICA can fi ne-tune the isolators to provide maximum transmission (> 90 % per stage) 

and at the same time maximum extinction at any wavelength of interest. 

Optical isolators for different 

wavelengths and beam sizes. 

Typical extinction curve of a singlestage 

isolator at 780 nm. The 

maximum extinction ratio is -40 dB. 

The red arrow indicates a range of 

approx. 25 nm, where the extinction is 

still < -30 dB. 

Key features 

· Excellent feedback protection by high 

quality polarization optics 

· Wide wavelength range available (UV 

to NIR) 

· Single-stage (isolation > 30 dB) and 

double-stage (isolation 

> 60 dB) models 

· 3 .. 5 mm aperture 

· Fine-tuning to application wavelength 

upon request 




FiberDock TM and FiberOut 

Universal Fiber Coupler and Fiber Collimator 

Universal fi ber coupler. 

Flexible output collimation. 

Key features 

· Highest single-mode coupling 

effi ciency 

· Simple and straight-forward 

adustment 


(US 7,321,706, EP 1,666,944) 


Convenient handling 

FiberDock is a conveniently aligned fi ber 

coupler, suitable for both TOPTICA laser 

systems and third party lasers. FiberOut is 

a compact, easy-to-use output collimator 

for any fi ber-coupled laser system. 

Standard requirements for fiber couplers 

are a high coupling efficiency, simple and 

straight-forward handling, plus long-term 

stability even under changing ambient 

conditions. TOPTICA's patented FiberDock 

not only meets these requirements but 

provides further advantages: it is a compact, 

rugged coupler designed for easy use, yet 

providing all required degrees of freedom for 

maximum coupling efficiencies. Coupling 

ratios up to 85 % have been demonstrated 

with single-mode fibers or polarization 

maintaining fibers, and 90 % have been 

reached with multi-mode fi bers. FC/APC 

and FC/PC connectors can be used. 


Fiber type MM, SM, PM 

Connector FC/PC and FC/APC (others on request) 

Lens focal length Up to 30 mm 

Wavelength range 350 nm to 3000 nm 

Size 40 x 40 x 41,5 mm 3 (W x H x L) 

All 6 alignment axes (2 x X/Y, Z, Theta) are 

decoupled, and mechanical hysteresis has 

significantly been reduced to a minimum. 

Once aligned, all axes can be individually 

locked. 

Based on the individual laser parameters 

such as wavelength (range 350 to 2800 nm) 

and beam diameter (up to 6 mm), a suitable 

focusing lens is selected and installed. The 

FiberDock can be mounted on various 

adaptors (supplied by TOPTICA) or fi xed 

directly to your laser device. 

Flexible output collimation 

Customers who need a collimated output 

beam for their fi ber-coupled laser will 

appreciate the FiberOut collimator. The 

rugged, inexpensive collimator lends itself to 

both FC/PC and FC/APC-type connectors. 

It can be equipped with a variety of lenses, 

matching different fi ber mode-fi eld diameters 

and output beam sizes. 

Coupling effi ciency 

Up to 85 % in a SM fi ber* 

Up to 90 % in a MM fi ber* 

Clear aperture Up to 6 mm (depending on lens, typ. > 4.5) 

*Valid for a Gaussian beam and properly selected coupling lens. 

Patented fl exure mounts with

FPI 100 

Fabry-Perot Interferometer and Detector Unit 

Confocal scanning interferometer 

The Fabry-Perot Interferometer FPI 100 

comprises a confocal scanning interferometer 

and a photodetector unit in a 

single, compact and rugged device. 

Scanning Fabry-Perot interferometers 

are established tools for measuring and 

controlling the spectral characteristics 

of continuous wave (cw) lasers. When 

high resolution, as well as fast and 

convenient operation, is required, the 

Options 

confocal interferometer design is the most 

appropriate solution. 

The FPI 100 is available with different mirror 

sets and photo detectors for wavelength 

ranges between 330 and 1700 nm. The 

standard mirror refl ectivity is 99.9 %, other 

refl ectivities are available upon request. The 

customer can choose between two models 

with free spectral ranges (FSR) of 1.0 GHz 

or 4.0 GHz. For both models, typical 

fi nesse values of about 1000 are attained. 

This translates into a spectral resolution 

of 1 MHz or 4 MHz for the two versions, 

respectively. 

Soon available (Q3/09): 

IR versions for wavelengths up to 

2900 nm. 

Mirror exchange kit. 

Mirror exchange kit Quick adaptation to new wavelength ranges 

Six different mirror sets available for 

wavelengths 330 .. 1700 nm 

Photo diode exchange kit* Matches the diode sensitivity to the 

incident light wavelength 

Two models available for wavelengths 

330 .. 1100 nm or 900 .. 1700 nm 

Auto-aligned unit with built-in focusing lens 

Scanning option* Stand-alone scan generator miniScan 

(page 51) with integrated photodiode amplifi er 

Piezo element in FPI can also be 

driven with SC 110 module (see page 33) 

Fiber coupler kit Fast exchange of laser source using an 

FC/APC style connector 

*Photo diode exchange kits and miniScan are general laser accessories and can be 

purchased and used independently of the FPI 100. 

Scanning Fabry-Perot interferometer 

and detector unit. 

Photo diode exchange kit. 

Key features 

· Convenient mode analysis of diode 

lasers 

· Various mirror sets available for 

330 .. 1700 nm 

· Free spectral range 1 GHz or 4 GHz, 

fi nesse > 400 (typ. 1000) 

· Reduction of short-term linewidth 

of diode lasers possible (please 

inquire) 




FPI 100 

Fabry-Perot Interferometer and Detector Unit 

FPI 100 base units 

Article number Wavelength range FSR Finesse 

Spec. Typ. 

FPI 100-0355-y 330 ... 380 nm 

> 200 

FPI 100-0400-y 380 ... 430 nm > 300 


Resolution 

Typ. 

FPI 100-0500-y 

FPI 100-0750-y 

430 ... 660 nm 

615 ... 885 nm 

y = 1: 1 GHz 

y = 4: 4 GHz 

> 400 

> 400 

1000 1 or 4 MHz 

FPI 100-0980-y 825 ... 1200 nm > 400 

FPI 100-1500-y 1200 ... 1700 nm > 400 

FPI 100-xxxx User specifi c User specifi c 

Base unit includes Piezo stack for scanning, mirror set and photodiode for the chosen wavelength, post and post mount. 

Not included: miniScan or fi ber coupler. 

Options and accessories for upgrade or wavelength adaptations of existing FPI 100 Base Units 

Drivers and detectors 

Article number Description Specifi cations 

SC 110 Scan unit Voltage ramp 0 .. +150 V 

miniScan 102 

Scan unit with integrated 

photo diode amplifi er 

Aperture 

7 mm 

Voltage ramp 0 .. +100 V 

Variable gain (3.3 x 10 4 V/A to 1 x 10 7 V/A), 6 levels, 30 kHz bandwidth 

Mirror exchange kits 

Article number Description Min. Typ. 

FPI-MEXCK 0355 330 ... 380 nm 

FPI-MEXCK 0400 380 ... 430 nm 

FPI-MEXCK 0500 430 ... 660 nm 

FPI-MEXCK 0750 615 ... 885 nm 

FPI-MEXCK 0980 825 ... 1200 nm 

FPI-MEXCK 1500 1200 ... 1700 nm 

R > 99.8 % R ≈ 99.9 % 

Photo diode exchange kits 

Article number Description Wavelength coverage 

FPI-PD-EXCK VIS Photo diode VIS 330 - 1100 nm 

FPI-PD-EXCK NIR Photo diode NIR 900 - 1700 nm 

Fiber coupler kit FPI-FCK FC/APC Standard socket type FC/APC 

We also offer other fi ber accessories. Please inquire.

miniScan 102 

Scan Generator with Piezo Driver and Photo Diode Amplifi er 

Scan unit for FPI 100 — and more 

The miniScan 102 comprises a scan 

generator, Piezo driver, and a photo 

detector amplifi er. The unit has been 

designed for scanning interferometers such 

as TOPTICA's FPI 100 (see pages 49 - 50), 

but can also be used independently for 

everyday laboratory tasks. 

Output amplitude and frequency range of 

the miniScan 102 have been adapted to low 

voltage Piezo actuators (up to 100 V output, 

2.5 mA). The fl exible low noise photo diode 

amplifi er is a transimpedance amplifi er 

(current-to-voltage converter). It is ideally 

suited for reading out FPI transmission 

signals, e.g. to monitor the longitudinal 

mode properties of tunable lasers. 


Scan generator 

Frequency 100 mHz – 200 Hz (linear ramp), adjustable via 3-stage 

range switch (coarse) and potentiometer (fi ne) 

HV amplifi er 0 .. + 100 V output, max. 2.5 mA 

Offset and amplitude 

of output signal 

Adjustable via potentiometer 

Trigger output TTL (+5 V) 

Operating voltage 100 .. 120 V / 220 .. 240 V AC, 50 .. 60 Hz 

(auto detect) 

Dimensions 125 x 88 x 205 mm3 Photo diode amplifi er 

Gain Adjustable from 3.3 x 104 V/A to 1 x 107 V/A, via 6-stage switch 

(coarse) and potentiometer (fi ne, 10 – 100 %) 

Offset of output signal Adjustable via potentiometer 

Output coupling AC (10 Hz), AC-HF (300 Hz) or DC coupling 

Detection bandwidth 30 kHz 

miniScan 102 — scan generator with 

photo diode amplifi er. 

Key features 

· Stand-alone scan generator for 

scanning interferometers 

· Universal transimpedance amplifi er for 

photo detectors 




WS / HighFinesse Ångstrom Series 

High Precision Wavelength Meters 

WS/Ultimate, highest precision 

wavelength meter. 

Fizeau interferometer setup of 

WS series. 

MultiChannel option for simultaneous 

measurement of several lasers. 


Highest accuracy & highest speed 

The wavelength meters of the HighFinesse/ 

Ångstrom series accomplish wavelength 

measurements with highest accuracy. Both 

cw and pulsed lasers with narrow-band 

emission can be examined, monitored and 

even actively controlled. Various models of 

the WS series are available, covering UV to 

IR wavelength ranges (192 .. 2250 nm). 

Based on a rugged Fizeau interferometer 

setup without any moving components, 

the wavelength meters provide best 

performance even under harsh conditions. 

The interferogram is read out by a sensitive 

CCD array. Sophisticated fi rmware exploits 

the interferogram data to calculate the laser 

wavelength. The result is displayed in nm, 

Hz, cm -1 or eV, whatever the customer 

prefers. The sensitivity of the detector unit 

is in the nW range. High-speed data 

processing algorithms enable single-pulse 

measurements up to a repetition rate of 

300 Hz. 

Options 

MultiChannel Simultaneous measurement of 2,4, or 8 lasers 

PID control 

Locks your laser to any wavelength or tunes it along 

arbitrary functions. Can be combined with MultiChannel option 

Linewidth option Calculates the laser linewidth using the interferogram data 

Diffraction grating For spectral analysis of broad linewidth lasers 

Wavelength meter display 

(WS/Ultimate-10 plus MultiChannel option) 

TTL For synchronization of experiment and measurement 

High precision laser locking with WS/Ultimate and PID option 

Key features 

· Unmatched absolute accuracy up to 

2 MHz 

· Measurement ranges from UV to IR 

(192 nm .. 2250 nm) 

· For pulsed and cw lasers 

· Sensitivity down to nW light power 

· Up to 300 Hz acquisiton speed 

· USB interface

Convenient operation 

Options and accessories 

Easy handling is guaranteed by a fi ber The PID control option permits locking of 

input port which serves to couple the laser the laser frequency to arbitrary values, 

radiation into the wavelength meter. The without requiring atomic transitions or 

device is computer-controlled via a fast cavity transmission peaks. In addition, 

USB interface. Fully automated long-term various functions (sine curve, triangle, etc.) 

measurements can be recorded and data can be selected to scan your laser in any 

can be converted to different formats for desired manner. For monitoring of several 

subsequent evaluation, e.g. to precisely lasers, the MultiChannel option enables 

assess the long-term frequency stability of simultaneous wavelength measurements of 

a laser system. 2, 4 or even 8 laser systems. The PID option LSA — Laser Spectrum Analyser for 

can also be combined with the MultiChannel characterization of broad-band light 

option to actively stabilize up to 8 lasers 

simultaneously. Further options allow for 

linewidth determination, or synchronization 

to a given experiment via a TTL port. 

sources. 

Spectral analysis of Neon discharge lamp by LSA. 

Absolute accuracy of wavelength meter versions 

Measurement 

range 

Absolute 

accuracy 


Laser spectrum analyser LSA 

Spectral range (standard) 350 – 1100 nm 

Wavelength measurement 

5 pm @ 633 nm (abs. accuracy) 

1 pm (rel. accuracy) 

Sensitivity 10 pJ @ 633 nm 

Linewidth accuracy 1 pm 

Minimum detectable linewidth 

∆λ/λ 

4 * 10-5 (e.g. 25 pm @ 633 nm) 

Repetition rate 

LSA WS5 WS6- 

600 

WS6- 

200 

Wavelength 10 Hz 

Analysis 5 Hz 

WS7 WSU- 

30 

WSU- 

10 

Standard 350 - 1120 nm • • • • • • • • 

UV 248 - 1100 nm • • • • • • 

UV-II 192 - 800 nm • • • • • 

IR 800 - 1750 nm • • • • • 

IR-II 1000 - 2250 nm • • • • 

192 - 370 nm [pm] 6 3 0.6 0.4 0.2 0.1 0.1 0.1 

WSU- 

2 

370 - 1100 nm [MHz] 6000 3000 600 200 60 30 10* 2** 

1100 - 2250 nm [MHz] 4000 2000 400 150 40 20 

Calibration Built-in Built-in Built-in Built-in External External External External 

* ± 200 nm around calibration wavelength ** ± 2 nm around calibration wavelength 




CoSy 

Compact Saturation Spectroscopy Unit 

CoSy — measurement head and 

control unit. 

Doppler-free and Doppler-broadened 

absorption spectrum of Cesium. All 

hyperfi ne and cross-over lines are 

resolved. 

Key features 

· Compact unit for Doppler-free 

absorption spectroscopy 

· Cs or Rb fi lling, others on request 

· Fiber input 

· Magnetic fi eld for Zeeman shift of 

atomic lines 


Doppler-free saturation spectroscopy 

Saturation spectroscopy is a wellestablished 

technique for precise frequency 

stabilization of tunable lasers. The usage of 

two counter-propagating laser beams within 

the same absorption volume serves to 

select a class of atoms with zero velocity in 

the direction of beam propagation. Hence, 

Doppler broadening of atomic absorption 

lines is suppressed, greatly increasing 

the resolution of the acquired absorption 

spectra. 

Ideal for laser locking 

The CoSy module comprises all optical 

components and signal processing 

electronics needed for Doppler-free 

spectroscopy in a compact, fi ber-coupled 

unit. The laser can thus be stabilized to 


any absorption signature, using either the 

regulator modules of the SYS DC 110 

series (see pages 32 - 39), or the standalone 

lock-box LaseLock (see page 41). 

Frequency stabilities below 1 MHz are 

easily attained, corresponding to a relative 

uncertainty on the 10 -9 level. 

CoSy components 

The CoSy measurement head contains 

the spectroscopy cell, optics and 

photodetectors. The absorption cell is 

thermally stabilized in order to provide a 

constant vapor pressure. The CoSy Control 

unit includes the power supply module, the 

signal processing board, the temperature 

controller, and output signal connectors. 

Both Doppler-broadened and Doppler-free 

spectra are simultaneously available. 

Dimensions of glass cell ø 26 mm x 25 mm or ø 26 mm x 15 mm 

Available fi llings (COSY-RB) Rubidium; mixture of 85Rb and 87Rb (COSY-CS) 133Cs (COSY-XX) Other cells on request (see next page) 

Fiber input power 1 µW ... 3 mW, depends on required resolution 

and SNR 

Gain of photo detector amplifi ers Adjustable via range switch (coarse) and 

trim potentiometer (fi ne) 

Set temperature of glass cell Adjustable via trim potentiometer, 

range 10 to 40 °C 

(no cooling below room temperature) 

Electronic outputs 

(BNC sockets) 

A: Doppler-free absorption spectrum 

B: Doppler-broadened absorption spectrum 

I: Optical input power level 

Integrated fi eld coil AC or DC magnetic fi eld for Zeeman spectroscopy, 

magnetic fl ux density: range ± 70 µT 

Housing dimensions CoSy head 80 x 80 x 114 mm3 CoSy control 88 x 125 x 209 mm3 Operating voltage for CoSy control 100…120 V / 220 .. 240 V AC, 50 .. 60 Hz 

(auto detect)

Spectroscopy Cells 

Selected Gas Cells with High Purity Filling 

High purity fi lling for high-resolution 

spectroscopy 

Our gas cells provide high purity fi llings of 

various chemical elements and compound 

gases, suitable for high resolution spectroscopy. 

All cells are made of Pyrex glass 

and are equipped with optical quality 

windows (or optionally standard windows). 

Cell diameter is 26 mm and different 

lengths of 25 mm, 50 mm and 100 mm are 

offered. 


Article 

number 

Description Length 

mm 

Diameter 

mm 

Optical 

quality 

window 

CE CS 25 Cesium cell 25 26 yes - 



CE I2 100 Iodine cell 100 12 yes - 

CE K 50 Potassium cell 50 26 yes - 

CE K 100 Potassium cell 100 26 yes - 

CE RB 25 Rubidium cell 25 26 no - 

CE RB 50 Rubidium cell 50 26 yes - 

CE RB 100 Rubidium cell 100 26 yes - 

Buffer 

gas 

CE RB/N2 25 Rubidium cell 25 26 no N2 CE RB/30T NE 50 Rubidium cell 50 26 yes Ne, 30 Torr 

CE RB/85 50* Rubidium cell 50 26 yes - 

*Isotopically enhanced 85 Rb. 

Standard fi llings include Potassium, 

Rubidium and Cesium. Rubidium is also 

available as isotopically pure fi lling, or with 

an additional buffer gas (e.g. Nitrogen or 

Neon). 

A regularly updated stock list is 

accessible via our internet site: 

www.toptica.com/products/cells.pdf 

High quality spectroscopy cells. 

Key features 

· Alkaline metals, noble and compound 

gases for spectroscopic applications 

· Optical quality windows 

· Isotopically enhanced fi llings or buffer 

gas additions available 




Multipass Cell 

Herriott Cell for Absorption Spectroscopy 

Compact Herriott cell. 

Absorption spectrum of molecular 

oxygen, recorded with a thermally 

tuned DL DFB laser and a CMP-30 

multipass cell. 

Light pattern on the input mirror, upon 

illumination with a green HeNe-laser. 

Key features 

· 30 m optical path length within 0.9 l 

volume 

· Unambiguous input / output beam 

separation 

· No interference of beam spots for 

wavelengths up to 3 µm 

· OEM version on request 


30 m absorption length in 1 l volume 

The CMP-30 multipass cell is a Herriott 

absorption cell with a total optical path 

length of 30 m. It lends itself to applications 

which require a long interaction path 

between an electromagnetic wave and 

a gaseous sample, e.g. for monitoring 

tasks in industrial environments, but also 

for infrared absorption spectroscopy in 

scientifi c research. 

An incident beam enters the cell through a 

hole in one of the mirrors. The beam then 

undergoes 73 refl ections, describing a circle 

of spots on each mirror surface, before 

exiting the cell again. The dimensions of 

mirrors, separation between adjacent spots 

and the diameter of the entrance/exit hole 

have been designed to avoid spot overlap 

and thus, unwanted interference, up to 

wavelengths of 3 µm. 


Parameter Value 

Optical path length 29.9 m 

Volume 900 cm 3 

Overall length 50.2 cm 

Overall height 13.7 cm 

Overall width 9.4 cm 

Wavelength range 500 .. 3000 nm 

Mirror refl ectivity (λ > 1 µm) > 98.2 % 

Transmission 

(window excluded, (λ > 1 µm) 

> 26.6 % 

Operating pressure 10-3 .. 760 Torr 

Window transmission (CaF 2) 0.2 .. 9.5 µm 

Window free aperture 4 mm 

Unambiguous beam paths 

The beam enters the cell in the horizontal 

plane, whereas the output beam travels 

upwards. This ensures a clear separation 

between input and output beam, permitting 

accurate absorption measurements even 

in case of misalignment or incorrect 

focussing. 

The cell is resistant to the most common 

chemicals. Materials in contact with the 

gas are Pyrex and BK7 glass, stainless 

steel, CaF 2, Gold, Viton and Teflon. The 

cell can be operated at any pressure from 

10 −3 Torr up to one atmosphere. Gas inlet 

and outlet ports at both ends of the cell 

allow for examining flowing gases. On the 

other hand, the Pyrex glass pipe can be 

removed in-situ without dismantling the 

cell, when “room air” measurements are to 

be performed. 

Gas inlet ports Provided for pipes of 10 mm outer diameter; 

NPT ¼" threads 

(other connectors on request).

VFG 150 

Versatile Function Generator* 

Based on latest Direct Digital Synthesizer 

(DDS) and Field Programmable Gate Array 

(FPGA) technology, TOPTICA offers with 

the VFG 150 not only another 150 MHz 

arbitrary waveform generator but a novel 

approach to phase-controlled, coherently 

driven experiments in atom, ion and 

condensed matter physics. 

Phase-controlled frequency switching 

of rf signals 

The VFG 150 allows the user to predetermine 

the amplitude, frequency and 

phase of its sinusoidal output with a dwell 

time down to 5 ns. The frequency generator 

can be operated in two different frequency 

*Developed with Siegen University, group of 

Prof. Wunderlich. 


Frequency range 1 - 150 MHz 

switching modes. Phase-continuous 

switching preserves the actual phase when 

changing from one frequency to another. 

In phase-coherent mode, the phase at the 

switching time is set such that the new rf 

oscillates in phase with a virtual rf of the 

same frequency started at the beginning 

of the experimental sequence. Additionally, 

it allows for a user-defi ned phase offset 

maintaining the phase information of a 

given frequency all the time. 

Unlike arbitrary waveform generators, 

which are limited by their internal memory, 

the VFG 150 can emit infi nitely long signal 

trains with a very high complexity. 

Frequency resolution 32 bit, better than 50 mHz resolution 

Frequency switching modes Phase-continuous and phase-coherent switching 

Frequency switching time Internal trigger: 5 ns 

External trigger: Less than 100 ns from trigger pulse 

External clock 10, 20 or 25 MHz 

Maximum amplitude -4 dBm** 

Noise level Better than -70 dB within 1 kHz band of carrier 

Dynamic range Better than 50 dB 

Types of pulses 

Any pulse with up to 1000 steps and down to 5 ns dwell 

supported 

time, e.g. Blackman, Gaussian, Gaussian chirped, etc. 

Maximum length of sequences Unlimited 

Inputs Trigger 5 V CMOS, digital coupler isolated 

External clock 5 V CMOS, digital coupler isolated 

Outputs Synthesized waveform up to -4 dBm** into 50 Ω, 

transformer isolated 

Auxiliary digital outputs 4 x 5 V TTL into 50 Ω, each 

separately digital coupler isolated, minimum pulse width 

10 ns 

Sequence programming time Stream programming via USB 2.0 interface 

Software drivers: LabView library, Matlab scripts, DLL to 

use from other programming languages 

**The maximum amplitude depends on the frequency and is lower at the extremes of the frequency 

range. 

VFG 150 — more than just an arbitrary 

waveform generator. 

Key features 

· Frequency switching modes: phasecontinuous, 

phase-coherent 

· Frequency range 1 – 150 MHz 

· USB 2.0 computer interface with 

streaming capability 

· Infi nitely-long random sequences, 

not limited by storage capacity 

Phase-continuous switching. The 

phase of the output signal after 

switching back from an intermediate 

frequency to the initial frequency is 

different from its initial phase, leading 

to a smooth amplitude change without 

discontinuities. 

Phase-coherent switching. Even when 

switching back and forth between 

various frequencies the phase of each 

frequency is preserved. Additionally 

a user controlled phase offset can be 

added. 

Gaussian pulses, chirped pulses, 

Blackman pulses, etc. 



Single-Mode 

Diode Lasers 

TOPTICA offers a wide variety of the world‘s fi nest single-mode diode laser sources. 

Proven in OEM applications thousands of times and always steps ahead of the 

competition. From single-mode to single-frequency, highest powers available anywhere 

and long lasting performance — characteristics TOPTICA's OEM grade diode laser 

modules are famous for in many applications. 

Overview of single-mode, single-frequency diode lasers 


Single-mode 

Single-mode 

Single-frequency 

Lasers iPulse iBeam iWave BlueMode dfBeam XTRA 

Wavelength 

range 

Typical power 

range 

Operation mode 

Digital modulation 

frequency 

Single-frequency 

operation 

375 – 785* nm 375 – 785* nm 405 nm 405 nm 785* nm 785 nm 

Up to 

125 mW 

Pulsed & cw 

Analog 

modulation 

Up to 

125 mW 

cw 

Analog 

modulation 

Up to 

50 mW 

cw 

Analog 

modulation 

50 mW 

Up to 

100 mW 

Up to 

500 mW 

cw cw cw 

250 MHz - - - - - 

No No 

No 

(linewidth 

< 150 GHz) 

Yes, < 5 MHz 

linewidth 

Yes, < 50 MHz 

linewidth 

Yes, < 10 MHz 

linewidth 

Options Fiber delivery Fiber delivery Fiber delivery Fiber delivery Fiber delivery** Fiber delivery** 

*Standard wavelength range, others up to 1060 nm on request **With additional optical isolator 

Your iPulse laser will fulfi ll even 

hardest pulsing requirements down 

to the single digit ns regime. Even 

asynchronous and / or multi-level 

pulses can easily be addressed.

iBeam / iPulse 


iBeam / iPulse 

The iBeam / iPulse series provides 

a diffraction-limited beam quality for 

demanding analytical tasks – from the 

UV to the IR region (375 nm – 1060 nm). 

Combining circular beam shape and highest 

pointing stability (drift < 10 µrad/K), it serves 

applications which cannot accept mediocre 

performance. An excellent beam profi le and 

maximum available diode power on the 

market are just some of the benefi ts our 

customers appreciate. 

The iPulse represents the next generation 

of pulsed diode lasers, enabling digital 

modulation frequencies from sub Hz up to 

250 MHz. Even asynchronous pulsing down 

to single digit nanoseconds regimes is easily 

Highest power / best performance 

TOPTICA‘s iBeam / iPulse lasers keep both 

crucial factors relevant for our customers 

in perspective: delivering highest power 

(e.g. > 120 mW @ 642 nm) with best 

performance (e.g. 0.5 % power stability in 

48 h) of any diode laser available. 

Feedback-Induced Noise Eraser (FINE) 

Power instabilities and high noise levels 

are common symptoms with any diode 

laser, when there is a tendency for optical 

feedback in an optical set-up (e.g. back 

refl ections from fi ber end-facets or from 

highly refl ective samples). 

A new feature, the groundbreaking Feedback 

Induced Noise Eraser (FINE) of TOPTICA‘s 

iBeam lasers eliminates this problem. A 

simple push of a button makes TOPTICA‘s 

iBeam / iPulse lasers ultra-stable against 

optical feedback. Customers save time, 

costs and efforts, by making re-alignment 

and optical isolators unnecessary. 

Autopulse 

Another feature to make operation more 

convenient is the new autopulsing function, 

now offered with iBeam / iPulse lasers. 

addressable with the iPulse, eliminating the 

need for expensive external modulators 

(AOMs, FOMs, AOTFs). With the constantly 

expanding choice of available wavelengths 

of laser diodes (e.g. 442 nm or 488 nm), 

more and more applications traditionally 

served by bulky gas lasers, are nowadays 

Offering improved fl exibility, both frequency 

(15 Hz – 2 MHz) and duty cycle (10 – 90 %) 

can be set using simple software commands. 

A great feature, making feasibility studies, 

integration work and testing easier than with 

any other diode laser in this class. 

TopControl 

The TopControl, a LabView ® based graphical 

user interface for Microsoft Windows ® is 

introduced, which makes working with 

the iBeam / iPulse even more convenient. 

TopControl enables PC-controlled 

adjustments of all relevant laser parameters 

with ease, giving the customer convenient 

access to the unique FINE, AUTOPULSE 

feature and much more of TOPTICAs singlemode 

diode laser modules. 

more easily accessible with the iBeam and 

iPulse series. 

Both models can be conveniently equipped 

with TOPTICAs FiberDock, a fi ber coupler 

providing superb single-mode coupling 

effi ciencies and outstanding stability 

(typically coupling effi ciencies > 75 %). Full 

computer control (RS 232) and long-term 

hands-off operation (MTBF typ. > 10.000 h) 

are further aspects which make iBeam / 

iPulse lasers best in class. 

Key features 

· Highest power stability: 

< 0.5 % drift (within 48 hours) 

· Excellent beam quality: wave front error 

< 0.05 λ, M² < 1.2 

· Lowest rms noise: 

< 0.5 % (10 Hz – 100 MHz) 

· Direct modulation capability avoids 

power killers like AOM/EOMs 

· Ultrafast asynchronous pulse 

modulation up to 250 MHz (iPulse) 

· Highest single-mode fi ber coupling 

effi ciencies: > 60 % guaranteed, 

> 75 % typical 

· FINE (Feedback-Induced Noise Eraser) 

Typical applications 

· Confocal microscopy 

· Ellipsometry 

· Microlithography 

· Cytometry 

· TIRF 

· Rapid prototyping 

· Disc mastering 

· Medical research 

Unmatched power stability of the 

iBeam / iPulse series. 




iWave 

Narrow Linewidth 

iWave — narrow linewidth, fi xed frequency 

The iWave combines the OEM design of the established 

iBeam laser system and TOPTICA's proprietary knowhow 

in providing narrow linewidth diode lasers. For 

the fi rst time, an industrial grade diode module is 

available which provides high power (up to 50 mW) and 

narrow linewidth 

(< 0.08 nm) at 405 

nm simultaneously. 

Until recently, 

customers were 

forced to decide 

between 13 mW at 

405 nm with superb 

coherence length 

(up to 100 m) and 60 

mW at short coherence length (some microns). If neither 

option was acceptable, they had to resort to bulky gas 

lasers. 

The iWave approach 

solves this dilemma, 

serving applications 

such as Raman 

spectroscopy and 

Raman microscopy. 

All specifi cations 

concerning beam 

pointing stability 

(drift < 10 µrad/K), power stability (drift < 0.5 % over 

48 hours) and best beam quality (wavefront error < 

0.05 λ) maintained. Both high spectral and high spatial 

resolution are now accessible in the violet wavelength 

range by diode technology. 

To support OEM integration, the iWave uses a compact, 

rugged, all-in-one laser cabinet. No additional power 

supplies or control boxes are required. Remote operation 

is fl exible via an integrated RS 232 interface. 

Key features 

· 50 mW @ 405 nm * 

· Narrow linewidth (< 0.08 nm) 

· Excellent power stability 

< 0.5 % (48 hours) 

*Other wavelengths on request 


· Raman microscopy 

· Raman spectroscopy 

· Application with linewidth sensitive defl ection (AOD) 


BlueMode 

Power and Coherence 

BlueMode — 50 mW at 405 nm with 

coherence length > 25m 

The BlueMode diode laser is the fi rst laser featuring high 

power, high coherence and superior long-term mode stability 

for demanding applications. All incorporated a compact 

and rugged design. The BlueMode laser is based on new 

proprietary technology, 

developed 

by TOPTICA for best 

OEM capability. 

The unique 

BlueMode diode 

laser delivers 50 

mW @ 405 nm, 

with a spectral line 

width of less than 5 

MHz (< 0.003 pm, 

coherence length > 25 m guaranteed). A power stability 

better than 0.6% in 10 hours has been demonstrated. 

Combined with an excellent long-term coherence stability 

with outstanding single-mode behavior, this renders the 

laser a perfect fi t for demanding applications such as 

interferometry, holography or high resolution RAMAN 

spectroscopy. 

Optionally, the laser light can be coupled to single-mode 

fi bers using TOPTICA's OEM proven FiberDock unit. Due 

to the patented fl exure mount unit, easy adjustment, best 

long-term stability and highest coupling effi ciencies are 

achieved. 

Key features 

· 50 mW @ 405 nm free beam output 

· Linewidth < 5 MHz (< 0.003 pm), 

coherence length > 25m 

· Wavelength stability < 0.05 pm/h at constant 

environmental conditions 

· Highest power stability (< 0.6 % peak-peak within 10 

hours, at constant environmental conditions) 

· Relative intensity noise (RIN) ≤ -140 dB @ 10 kHz .. 

100 MHz 

· Built-in feedback protection (30 dB optical isolator) and 

beam shaping 

· Optional single-mode fi ber coupling with highest 

effi ciencies (typ. 60 % in single-mode fi ber) 


· Holography 


· Interferometry 

· Photonic down conversion

dfBeam 

Single-Frequency Guaranteed 

dfBeam — single-frequency single-mode 

diode laser 

You need stable, single-frequency laser radiation, in a 

compact, cost effective package? The dfBeam unites the 

advantages of our compact fi xed frequency sources and the 

unique properties of the latest distributed feedback (DFB) 

diode technology. 

Key features are an 

excellent beam quality, 

high output power 

(up to 100 mW) and a 

long coherence length 

(> 2.5 m). Contrary 

to an external cavity 

design, the DFB diode 

is not susceptible to 

vibrations or ambient 

temperature drifts, but maintains its single-frequency performance 

even under harsh environmental conditions (no 

mode-hops for hundreds of hours). 

Similar to the established iBeam series, the dfBeam offers 

a diffraction-limited beam profi le of circular shape. Due to 

the built-in RS 232 interface, our customers receive full 

control over the laser system. With respect to ease of use, 

the compact footprint (156 x 56 x 66 mm 3 ) of the unit, and 

the long lifetime of DFB diodes (MTBF > 5.000 hours) further 

enhance the value of the dfBeam. 

Key features 

· High spectral purity 

· Coherence length > 2.5 m 

· Linewidth < 50 MHz 

· Excellent beam quality 

· Power up to 100 mW 


· Raman spectroscopy, e.g. drug screening 

· Gas sensing (oxygen) 

· Interferometry 

· Holography 

XTRA 

Supporting High-Resolution 

Raman Spectroscopy 

XTRA — external cavity Raman laser 

The XTRA provides three top features from one single unit: 

Near Gaussian beam profi le, single-frequency operation 

(< 10 MHz) and up to 500 mW of output power (higher 

power units available on special request) make this laser the 

favourable choice for your demanding Raman application. 

Incoherent background 

light is 

suppressed by 

more than 40 dB, 

turning the XTRA 

into a favorable laser 

source for Raman 

spectroscopy with 

best signal-tonoise 

ratio. Whilst 

the performance of 

many lasers is compromised by optical feedback, the XTRA 

— equipped with a high-quality optical isolator — remains 

rock solid in order to optimize your results. Further more, 

single-mode fi ber-coupling is available on demand. Contrary 

to competing multi-mode lasers, the XTRA achieves up to 

250 mW output from a single-mode or even polarizationmaintaining 

fi ber. 

Key features 

· Up to 500 mW of laser power @ 785 nm 

· Single-frequency (linewidth < 10 MHz) 

· Great power and frequency stability 

· Amplified spontaneous emission (ASE) 

suppression by > 40 dB 



· Raman microscopy 

· Optical probing 

· Laser tweezer 



Ultrafast 

Femtosecond Fiber Lasers 

Femtoseconds for everyone 

FemtoFiber ® is TOPTICA's answer to the 

demand for more reliable and less expensive 

ultrafast lasers. Many people know 

femtosecond laser technology as being 

troublesome and expensive, belonging to 

the realm of the devoted laser enthusiasts. 

With modern FemtoFiber technology, 

however, ultrafast lasers can fi nally be 

used as routinely available laboratory 

tools. The new wavelengths introduced by 

the FemtoFiber series come as an added 

bonus. 

Modularity for scientifi c applications 

The modular concept of the FemtoFiber 

series serves the scientifi c community 

through its fl exibility. The laser oscillator 

at 1550 nm can be equipped with one or 

two amplifi ers, with frequency converters 

(second harmonic at 775 nm, IR 

supercontinuum, VIS supercontinuum, and 

more), with pulse compression (e.g. < 40 fs 

at 1.05 µm) and with pulse synchronization 

to a clock frequency. 


The various FemtoFiber laser confi gurations 

fi nd their way into several scientifi c 

communities. Frequency combs based 

on FemtoFiber technology, for example, 

can operate for days without needing 

much attention, quite in contrast to their 

solid-state counterparts. Engineers can 

successfully develop ultrafast applications 

(e.g. terahertz spectroscopy). Scientists in 

bio- and nano-photonics benefi t from the 

availability of ultrafast laser pulses in the 

ranges 485 – 700 nm and 980 – 1400 nm. 

The latest development in ultrafast laser 

technology, diode-pumped femtosecond 

fi ber lasers offer highest reliability at 

lowest costs. 

Mode-locked fi ber oscillator and 

fi ber amplifi er. 

Key features 

· Most reliable and compact ultrafast 

technology 

· Wide range of wavelengths 

· No cooling or pump laser issues 

· Lowest initial and running costs 

· Customized solutions available

FFS — FemtoFiber TM Scientifi c 

FFS.SYS 

> 250 mW and < 120 fs @ 1550 nm 

Built from robust telecom components, 

the fi eld-proven FFS.SYS, consisting of an 

Erbium fi ber oscillator and an Erbium fi ber 

amplifi er, is the heart of our modelocked 

fi ber laser design. The base unit consists of a 

passively mode-locked oscillator operating 

at a repetition frequency in the range of 80 

– 110 MHz. A core-pumped fi ber, doped 

with Erbium ions, acts as the active laser 

medium. The gain bandwidth of several 

tens of nanometers, centered at 1.55 µm, 

is suffi ciently broad for the generation of 

ultrashort pulses. 

Mode-locked operation of the FemtoFiber 

ring oscillator is self-starting and generates 

ultrashort pulses (< 150 fs). The dispersion 

management is based on the combination 

of fi bers with normal and anomalous 

dispersion at 1.55 µm. The oscillator 

produces milliwatts of power and seeds 

one or even two fi ber amplifi ers which then 

boost the power to more than 250 mW per 

amplifi er. A patented fi ber amplifi er design 

broadens the laser spectrum. Finally, an 

adjustable dispersion control module 

allows the user to compress the amplifi ed 

laser pulses to bandwidth-limited durations 

below 120 fs. 

Laser Synchronization and ECOPS 

The FFS-SYNC option enables the user 

to modulate the fi ber oscillator length of 

the FFS and thus to synchronize the laser 

to other pulsed lasers or instruments, or 

to lock the repetition frequency to a clock 

signal. The locking electronics FFS-PLL 

achieves excellent jitter values (rms-jitter < 

100 fs in the range 10 Hz - 100 kHz). 

With the ECOPS (Electronically Controlled 

Optical Sampling) technique the user can 

perform optical sampling or pump-probe 

experiments without a mechanical delay 

stage. ECOPS is successfully used in timedomain 

terahertz spectroscopy. 

FFS.SYS.40M 

The 40M laser systems with their unique, 

low repetition frequencies of 40 MHz have 

the highest pulse energies available for 

mode-locked Erbium fi ber lasers and pulse 

periods of no less than 25 ns. 

FFS.SYS.HP 

With record power values, the compact 

and rugged FFS.SYS.HP is available 

with options SHG, SYNC and PLL. The 

repetition frequencies are in the range of 

80 – 100 MHz. 

Ultrafast Erbium fi ber lasers with pulse 

durations < 120 fs. 




FFS 

Modular Design 

Modular concept for scientifi c fl exibility, 

e.g. TSHG at yellow wavelengths. 

Customized FemtoFiber system at 

485 nm. 

Independently confi gured phasecoherent 

dual beam system, derived 

from one master oscillator. 


Several options enhance the scope of the 

FemtoFiber Scientifi c lasers. The wavelength 

range is extended with the use of nonlinear 

crystals and nonlinear fi bers. 

Second harmonic 

The SHG unit accomplishes effi cient 

conversion of the laser beam to a wavelength 

of 775 nm. Pulse durations of the order 

of 100 fs are achieved at this wavelength 

which is very popular in the femtosecond 

community. The SHG unit can be combined 

with the classic FFS.SYS, but also with the 

FFS.SYS.HP. 

IR supercontinuum 

Pumped by the FFS.SYS, the CONT 

unit generates a continuous spectrum 

across the 1050 – 2100 nm wavelength 

range. The powerful IR super-continuum 

thus spans one optical octave, in other 

words a factor of 2 in frequency. Requests 

for customized supercontinuums, e.g. 

pumped by the FFS.SYS.HP or the 

FFS.SYS.40M are welcome. 

Tunable IR 

The dispersion control unit of the laser 

head allows the user to alter the shape of 

the IR supercontinuum. It is thus possible 

to tune the peak on the short-wavelength 

side in the range 990 – 1400 nm. Having a 

bandwidth of ~60 nm FWHM and a linear 

chirp, this part of the IR supercontinuum 

is compressed with the COMP module 

to pulse durations < 40 fs. TOPTICA 

also welcomes enquiries for customized 

systems with wavelength extensions even 

in the range of 980 – 1050 nm. With the 

same concept light between 1600 – 2100 

nm can be generated. 

Tunable VIS 

Another frequency conversion unit consists 

of a tunable second harmonic generation 

stage (T-SHG), generating frequency- 

doubled output from the COMP unit. The 

resulting bandwidth in the visible spectrum 

is approx. 2 nm, the pulse duration of the 

order of 1 ps and the tuning range spans 

the range from 520 – 700 nm when the 

system is based on the FFS.SYS laser 

system. The average power is > 1 mW. 

Customized laser systems are possible, at 

wavelengths as short as 485 nm. 

Dual beam 

The modelocked fi ber oscillator can also 

seed two fi ber amplifi ers. In this case, the two 

laser beams of the FFS.SYS-2B are perfectly 

synchronized and phase coherent. Each 

output can be independently confi gured 

with additional units, for example second 

harmonic generation for one beam and 

octave-spanning IR supercontinuum or 

tunable VIS for the other. The dual beam 

laser system is very useful for frequency 

comb experiments or certain types of 

coherent Raman spectroscopy (CARS).

Confi gurations 

FFS-SYNC 

Adaptations to laser, 

enabling modulation of 

pulse repetition frequency 

×2 

FFS-SYNC-PLL 

Phase-locked loop electronics 

for synchronizing laser pulses 

to reference signal 

FFS.SYS 

System Unit consisting of 

oscillator unit with integrated fi ber 

amplifi er and dispersion control 

module 

FFS.SYS.HP 

High Power system unit consisting 

of oscillator unit with integrated 

high power fi ber amplifi er and 

dispersion control module 

FFS.SYS-2B 

System Unit with additional 

amplifi er turning the laser into a 

dual beam system 

FFS.SYS-SHG 

System Unit with additional 

module for second harmonic 

generation 

FFS.SYS-CONT 

System Unit with additional highly 

nonlinear fi ber generating octavespanning 

supercontinuum in the 

infrared 

FFS.SYS-CONT-COMP 

Laser System generating < 40 fs 

pulses continuously tunable from 

990 – 1400 nm 

FFS.SYS-CONT-COMP-TSHG 

Laser System with ultrashort 

pulsed laser beam, 1 nm 

bandwidth, continuously tunable 

from 520 – 700 nm 

FFS laser head top view. 

FFS laser head side view. 

FFS add-on top view. 

All sizes in mm. 





System code Wavelength Pulse length Average power 

FFS.SYS 1550 nm < 120 fs > 250 mW 

FFS.SYS.HP 1550 nm 120 fs 350 mW 

FFS.SYS-2B 1550 nm < 120 fs 2 x > 250 mW 

FFS.SYS-SHG 775 nm 

< 120 fs 

< 150 fs 

> 60 mW 

> 80 mW 

FFS.SYS.HP-SHG 775 nm 180 fs 140 mW 

FFS.SYS-CONT 990 – 2100 nm < 100 fs (@1700 – 2100 nm) 5 – 40 mW 

FFS.SYS-CONT-COMP 990 – 1400 nm < 40 fs 15 mW 

FFS.SYS-CONT-COMP- 

TSHG 

520 – 700 nm (490 – 640 nm) < 1 ps 1 – 10 mW 

FFS Custom Design 

Additional options 

Please enquire 

FFS.SYNC 

· Adaptations to laser head, enabling modulation of the pulse repetition frequency 

· Resonance frequency Piezo transducer > 5 kHz 

· Repetition frequency tuning range > 200 kHz 

FFS.PLL 

System legend 

Phase-locked loop electronics for synchronization of laser pulse train to external reference signal 

RMS jitter < 100 fs (10 Hz – 100 kHz) 

SYS Oscillator Unit including 1 Amplifi er Stage 

HP Oscillator Unit including 1 High Power Amplifi er Stage 

2B Oscillator Unit including 2 Amplifi er Stages* 

SHG Second Harmonic Generation Module 

TSHG Tunable Second Harmonic Generation Module* 

CONT Continuum Generation Option* 

COMP 

*Not available with HP option 

General specifi cations 

Pulse Compression Module* 

Repetition rate (factory set) 80 – 110 MHz (or customized system) 

Output coupling Free-space 

Beam shape TEMOO Beam divergence < 1 mrad, wavelength dependent 

Polarization Linear, horizontal (SYS, SYS-2B, CONT, COMP), vertical (SHG, TSHG) 

Laser head dimensions 

(W x H x D) 

318 x 122 x 236 mm3 Add-on-module dimensions 

(W x H x D) 

Supply rack dimensions 

(W x H x D) 


258 x 122 x 227 mm 3 

355 x 132 x 360 mm 3 

Line input 90 – 260 VAC, 47 – 63 Hz (auto detect) 

PC interface USB

iChrome TM — 

Industrial Grade Tunable Laser Source 

Fully hands-off tunable operation 

This new laser source has been designed to 

provide the tunability needed for scientifi c 

tasks while fulfi lling operating requirements 

of the industry. The iChrome is based on 

the proven FemtoFiber technology and 

has the fl exibility to automatically set the 

laser output to any wavelength in the 

visible range – from 488 nm to 640 nm. 

In contrast to conventional white light 

sources, the narrow bandwidth laser pulses 

are not fi ltered out from an intrinsically noisy 

supercontinuum. Even the coherence of 

the fundamental laser is preserved during 

the frequency generation processes. This 

process ensures through its very nature 

that the visible light exhibits the best 

intensity noise performance. Additionally, 

the contrast of the continuously tunable 

laser line against the spectral background 

is orders of magnitude better than possible 

with acousto-optic fi ltering. 

Single-mode fi ber output 

The output of this laser system is delivered 

via a single-mode, polarization maintaining 

fi ber. Independent of the chosen wavelength 

the fi ber output exhibits a smooth TEM 00 

profi le, an excellent beam quality with M 2 

< 1.1 and a linear polarization with a PER 

> 1:100. Pointing stability and ease of 

integration are guaranteed. All colors are 

delivered from the same fi ber, without any 

need for additional beam combination that 

— in multi-laserline set-ups — is always 

susceptible to misalignment over time. 

Automatic control 

The entire laser system comes in a very userfriendly 

design: No alignment procedures of 

any optical components distract the user 

from the main task – to produce biologically 

relevant results. The laser is insensitive to 

vibrations or ambient temperature drifts. 

The built-in power PC controls all necessary 

parameters to ensure smooth operation 

every minute, hour, day, week and month. 

The power PC also hosts a web server and 

is equipped with an Ethernet connection. 

Therefore, all user commands can be sent 

from an ordinary web browser to the laser 

system. 

FemtoFiber pro — 

Next Generation FemtoFiber Lasers 

pro technology in 

femtosecond lasers 

Encouraged by the proven FemtoFiber 

technology we pushed its outstanding 

reliability one step further and developed 

the next generation of fi ber lasers – the 

FemtoFiber pro. Drawing on our experience 

from our large installed laser base, all 

components were re-engineered to improve 

the overall performance. As a result, this 

laser satisfi es the requirements of even 

the most demanding applications. For 

example, the new saturable absorber mirror 

(SAM) ensures stable modelocking under all 

laboratory conditions – even humidity and 

temperature drifts are tolerated to a large 

extend. In addition, all fi ber components are 

polarization maintaining. This signifi cantly 

increases the robustness against 

environmental infl uences. Many functions 

like the variable dispersion adjustment are 

now computer-controlled. The FemtoFiber 

pro comes in a sealed box in which the SHG 

or the CONT module can be integrated. 

Ultra-widely tunable visible laser. 

Single box 19" rack mount. 

Typical output spectrum tunable over 

the complete wavelength range from 

488 to 640 nm with a fi ber coupled 

output power of more than 1.5 mW. 

FemtoFiber pro — next generation of 

ultrafast fi ber lasers. 



Terahertz 

Closing the Gaps in the 

Electromagnetic Spectrum 

Imaging, fi ngerprinting, process 

control 

The terahertz range refers to frequencies 

from 0.1 to 10 THz, or wavelengths between 

3 mm and 30 µm. Electromagnetic radiation 

at these frequencies has some unique 

properties. Terahertz waves pass through a 

variety of materials that are usually considered 

opaque, such as clothing, plastics, paper 

or cardboard. On the other hand, terahertz 

radiation is strongly absorbed by water. 

In addition, many chemical substances, 

including explosives and toxic gases, exhibit 

characteristic absorption lines (“fi ngerprints“) 

at terahertz frequencies. 

The potential of terahertz light to be used 

for imaging, combined with its chemical 

sensitivity characteristic, opens up a vast 

number of applications. They include trace 

gas detection, humidity measurements, 

industrial process control, non-contact 

quality inspection of foodstuffs, the analysis 

of pharmaceuticals, and security screening. 


Terahertz generation 

The generation of intense, directional 

terahertz radiation used to be diffi cult, making 

the terahertz range the last remaining gap in 

the electromagnetic spectrum. Far-infrared 

quantum-cascade lasers commonly require 

cryogenic temperatures and suffer from 

poor beam profi les and low spectral purity. 

Electronic devices, on the other hand, are 

limited to a few 100 GHz at most. Moreover, 

they can hardly, if at all, be frequencytuned. 

The frequency band between 0.5 and 5 

THz has now become the domain of laserbased 

techniques. Recent opto-electronic 

approaches make use of femtosecond 

lasers or tunable diode lasers emitting in 

the near-IR. Photomixers, photoconductive 

switches or nonlinear crystals then convert 

the laser output into terahertz waves - either 

broadband or spectrally resolved, depending 

on the method used. 

Airbag safety cover. Left: photograph, right: 

terahertz image (courtesy of Prof. M. Koch, 

University of Braunschweig). 

The complete laser portfolio 

TOPTICA has been cooperating with 

researchers in the terahertz arena from the 

beginning. As a result, TOPTICA is now the 

only company worldwide that offers the 

most suitable lasers for both approaches 

– pulsed and cw terahertz generation. Our 

FemtoFiber® lasers provide the perfect 

parameters for optical rectifi cation and 

photoconductive switches. In addition, our 

tunable DFB diode laser systems have been 

used in some of the leading laboratories 

for cw photomixing. The laser output can 

be amplifi ed to attractive power levels 

using all-diode technology. Last not least, 

our patented technique of laser frequency 

control achieves an unmatched frequency 

resolution on the 1 MHz level. Latestgeneration 

photomixers now form the basis 

of TOPTICA's proprietary cw terahertz 

spectroscopy kit.

Laser Packages — Sources for 

Pulsed and cw Terahertz Generation 

FemtoFiber ® technology for pulsed terahertz 

Pulsed terahertz radiation is generated with femtosecond 

lasers. The ultrashort laser pulses are focused on a semiconductor 

material, 

generating a fast 

current transient. 

According to Maxwell's 

equations, this leads 

to the emission of 

elec tro magnetic wavepackets 

— with a 

broad spectrum in the 

terahertz range. 

The most established emitter technologies are based on 

GaAs antennae, requiring a laser excitation wavelength 

around 800 nm. Other common generation mechanisms, 

also at 1550 nm, include intra-pulse difference frequency 

generation, optical rectifi cation in nonlinear crystals or at 

surfaces. 

Detection of terahertz pulses is based on optical sampling 

of the terahertz wave. The technique of electronically 

controlled optical sampling (ECOPS) removes the need for 

a scanning optical delay line. Tests indicate that TOPTICA‘s 

FemtoFiber technology provides the most suitable lasers 

for time-domain terahertz spectroscopy. The FemtoFiber 

laser cabinet offers 

models for 775 and 

1550 nm, and in 

each case provides 

the optimum 

specifi cations with 

respect to pulse 

duration and output 

power. 

cw terahertz packages 

Product Wavelength 

Standard package 

High precision 

High power 

Spectroscopy kit 853 + 855 nm 

Laser power 

(fi ber output) 

DFB lasers for cw terahertz 

Continuous-wave (cw) terahertz radiation is obtained 

by so-called optical heterodyning: the terahertz emitter 

(“photomixer”, a metal-semiconductor-metal structure) 

is irradiated with two near-infrared lasers of adjacent 

wavelengths. An antenna surrounding the photomixer 

emits an electromagnetic wave at the terahertz difference 

frequency. Benefi ts of this technique are a wide bandwidth 

and high spectral purity. 

Similar to the pulsed approach, most photomixers employ 

GaAs and thus require laser wavelengths below 870 nm. 

More recently, InP-based emitters have been demonstrated, 

operating in the telecom wavelength band of 1.5 µm. 

To help researchers select the most appropriate laser 

equipment for their cw terahertz setup, TOPTICA has 

designed three dedicated laser packages. All of these 

packages are available both at 850 nm and at 1550 nm. The 

fi ber-coupled “Standard Package” includes two widely 

tunable DL DFB lasers with low-noise driver electronics and 

a fi ber-optic beam combiner. The “High Power” extension 

includes a BoosTA amplifi er, increasing the optical power to 

> 200 mW (fi ber output). The “High Precision” package 

features two patented interferometers, which regulate both 

frequency and power of the DFB lasers. This brings the 

frequency resolution of the system to the 1 MHz level – the 

highest resolution 

of any tunable cw 

terahertz source. 

Scan range per 

diode 

Frequency 

accuracy 

THz 

scan range 

853 + 855 nm 

± 1.3 nm 

0 - 1750 GHz 

2 x 50 mW 

< 5 GHz 

1550 nm ± 2.2 nm 0 - 1200 GHz 

853 + 855 nm 

± 1.3 nm 

0 - 1750 GHz 

2 x 50 mW 

0.0015 GHz typ. 

1550 nm ± 2.2 nm 0 - 1200 GHz 

853 + 855 nm 2 x 100 mW ± 1.3 nm 

0 - 1750 GHz 

< 5 GHz 

1550 nm 2 x 500 mW ± 2.2 nm 0 - 1200 GHz 

Terahertz power ~ 0.5 µW power @ 300 GHz 

SNR: 80 dB @ 100 GHz, 50 dB @ 1 THz 

50 - 1750 GHz 

www.toptica.com 69


cw Terahertz Spectroscopy Kit 

Leading-edge Photomixer Technology 

Fiber-pigtailed antennae and digital lock-in 

Reacting to the increasing market demand, TOPTICA has 

designed a complete cw terahertz spectroscopy kit, which 

supplements the existing laser packages. The spectroscopy 

kit provides all necessary equipment to get an actual cw 

terahertz measurement started! State-of-the-art photomixer 

technology provides 

a high bandwidth, 

attractive terahertz 

power levels in the 

1 µW range, and 

excellent signal-tonoise 

ratios up to 90 

dB. The terahertz 

emitter / re ceiver 

modules are equipped 

with broad band logspiral 

antennae, a Silicon lens on the terahertz output side, 

and a single-mode fi ber pigtail. The all-fi ber setup alleviates 

the need for cumbersome beam alignment and permits a 

convenient and fl exible adaptation in any terahertz assembly. 

Electronic chopping of the emitter bias voltage, as well as lockin 

detection of the receiver photocurrent, is accomplished 

by TOPTICA's proprietary TeraControl unit TC 110. Drawing 

upon technology developed for our successful DigiLock 

module, the TC 110 unites all of the advantages of a digital 

lock-in amplifi er in a compact module, which fi ts in the 

DC 110 laser supply rack. 

The entire terahertz setup is computer-controlled and 

a LabView software package is supplied as part of the 

delivery. 

All-fi ber based cw terahertz spectroscopy kits 

Basic Extended 

2 fi ber pigtailed photomixers • • 

TeraControl TC 110 (lock in amplifi er) • • 

Low-noise transimpedance amplifi er • • 

LabView user interface • • 

2 xyz stages for photomixers - • 

Focussing mirrors - • 

Motorized delay stage - • 

Optical rails - • 

Sample positioning stage - - 

Data processing routines - - 

855 nm GaAs based antennae • • 

1550 nm InP based antennae Est. 2010 Est. 2010 


Basic and extended versions 

Two versions of the cw terahertz spectroscopy kit are 

available. The basic version features two low-temperaturegrown 

GaAs photomixers — one for terahertz generation, 

one for coherent detection —, a TC 110 TeraControl unit, 

a low-noise transimpedance amplifi er for the detector 

photocurrent, and an intuitive LabView user interface. 

The extended version further comprises two precision 

positioning stages for the photomixers, two off-axis 

parabolic mirrors to collimate and re-focus the terahertz 

beam, and a motorized delay stage for phase-sensitive 

terahertz measurements. The entire optomechanics are 

mounted on a rail system and enable a straightforward 

adjustment of the terahertz beam path. 

The spectroscopy kit is compatible with the Standard 

Package. For best SNR results and highest frequency 

resolution, we recommend our High Power and High 

Precision Extension, respectively. 

A spectroscopy kit for 1550 nm is currently under 

development and we anticipate market introduction in 

Q01/2010. 

High signal-to-noise ratio of 

terahertz power from 50 .. 1750 GHz.

pro Series 

Lasers for Scientific Challenges 

pro Philosophy 

Best specifi cations, highest stability, optimized hands-off operation 

pro Technology 

Flexure based mirror mounts, proprietary resonator design, machined from a solid metal block 

pro Series 

· DL pro (tunable diode lasers) 

· TA pro (amplifi ed tunable diode lasers) 

· DL/TA-SHG/FHG pro (frequency converted tunable diode lasers) 

· FemtoFiber pro (femtosecond fi ber lasers) 



www.toptica.com 63

Distributors 

Australia & New Zealand 

Lastek Pty. Ltd. 

Mr. Alex Stanco 

Thebarton Campus 

University of Adelaide 

10 Reid Street 

5031 Thebarton, SA 

Australia 

Phone: +61 8 8443 8668 

Fax: +61 8 8443 8427 

sales@lastek.com.au 

www.lastek.com.au 

China 

Universal (Hong Kong) 

Technology Co. Ltd. 

Mr. Alex Cai 

Room 615-619 

Capital Group Plaza 

No. 6 Chaoyangmen Beidajie 

Beijing 100027, P.R. China 

Phone: +86 10 8528 3377 

Fax: +86 10 8528 3344 

oe@universalhkco.com.cn 

www.universalhkco.com.cn 

France 

Opton Laser International 

Dr. Costel Subran 

Parc Club d‘Orsay Université 

29, rue Jean Rostand 

F-91893 Orsay Cedex, France 

Phone: +33 1 6941 0405 

Fax: +33 1 6941 3290 

ventes@optonlaser.com 

www.optonlaser.com 

India 

Simco Global Technology & 

Systems Ltd. 

Dr. R. S. Daryan 

Simco House (Head Offi ce) 

14 Bhawani Kunj 

Behind Sector D-II Vasant Kunj 

110017 New Delhi, India 

Phone: +91 11 2689 9867 

Fax: +91 11 2612 4461 

simcorsd@del2.vsnl.net.in 

www.simco-groups.com 

Israel 

Lahat Technologies Ltd. 

Mr. Kfi r Ben-Yehuda 

Teradion Industrial Zone 

M.P. Misgav, 20179, Israel 

Phone: +972 4 999 0151 

Fax: +972 4 999 0826 

sales@lahat.co.il 

www.lahat.co.il 

Japan 

F.I.T., Incorporated 

Mr. Kyoichi Hatakeyama 

2-7 Nihonbashi-Odenmacho 

Chuo-Ku 

Tokyo 103-0011, Japan 

Phone: +81 3 3666 7100 

Fax: +81 3 3666 7007 

sales@fi tinc.co.jp 

www.fi tinc.jp 

INDECO, INC. 

Mr. Kazunobu Takahashi 

1-11-14, Kasuga, Bunkyo-ku 

Tokyo 112-0003, Japan 

Phone: +81 3 3818 4011 

Fax: +81 3 3818 4015 

Sonezaki Sawada Bld. 6F 

2-1-13, Sonezakishinchi, 

Kita-ku, 

Osaka 530-0002, Japan 

Phone: +81 6 6341 5799 

Fax: +81 6 6341 5798 

ind@indeco.jp 

www.indeco.jp 

Korea 

JINSUNG LASER 

Mr. Ha-Won Lee 

#535-5, Bongmyung-Dong 

Yusung-Gu 

Hanjin Offi cetel Rm# 1016 

Daejeon, 305-301, South Korea 

Phone: +82 42 823 5300 

Fax: +82 42 823 7447 

sales@jinsunglaser.com 

www.jinsunglaser.com 

TOPTICA Photonics AG 

Lochhamer Schlag 19 

D-82166 Graefelfi ng/Munich 

Germany 

Phone: +49 89 85837-0 

Fax: +49 89 85837-200 

info@toptica.com 

www.toptica.com 

Singapore / Malaysia 

Precision Technologies Pte Ltd 

Mr. Vincent Chan 

211 Henderson Road # 13-02 

Henderson Industrial Park 

Singapore 159552 

Phone: +65 6273 4573 

Fax: +65 6273 8898 

precision@pretech.com.sg 

www.pretech.com.sg 

Taiwan 

SLEO Photonics Co. Ltd. 

Mr. Jimmy Chao 

6F, No. 2, Lane 74 

An-der Streett 

Hsin Tien City, Taipei County 

Taiwan 231, R.O.C. 

Phone: +886 2 2211 5408 

Fax: +886 2 2211 5401 

sleo.jimmy@msa.hinet.net 

Turkey 

CS Analytical Laboratory 

Equipments Limited 

Mr. Ercan Acikalin 

Ergin Sokak No: 27/5 

06580 Mebusevier - Tandogan 

Ankara, Turkey 

Phone: +90 312 223 0302 

Fax: +90 312 223 0305 

can@csanalitik.com.tr 

www.csanalitik.com.tr 

United Kingdom & Ireland 

Mr. Howard Potter 

Unit 4H Lansbury Estate 

Woking, Surrey, UK, GU21 2EP 

Great Britain 

Phone: +44 1483 799 030 

Fax: +44 1483 799 076 

howard.potter@toptica.com 


USA & Canada 

TOPTICA Photonics, Inc. 

1286 Blossom Drive 

Victor / Rochester, NY 14564 

U.S.A. 

Phone: +1 585 657 6663 

Fax: +1 877 277 9897 

sales@toptica.com 


TOPTICA Photonics, Inc. 

1286 Blossom Drive 

Victor / Rochester, NY 14564 

U.S.A. 

Phone: +1 585 657 6663 

Fax: +1 877 277 9897 



Distributors 

only for Optical Disc Testing: 

Taiwan 

Omega Scientifi c Taiwan Ltd. 

Mr. James Ting 

3F-3, No.415, Sec. 4 

Sinyi Road 

110 Taipei City 

Taiwan R.O.C. 

Phone: +886 2 8780 5228 

Fax: +886 2 8780 5225 

omega001@ms3.hinet.net 

Japan 

ALTECH ADS Co. Ltd. 

Digital Solution Group 

Mr. Yoshinori Matsuura 

2F, Sumitomo Fudosan Bldg. 

13-4, Araki-cho 

Shinjuku-ku 

160-0007 Tokyo, Japan 

Phone: +81 3 5363 3005 

Fax: +81 3 5363 0945 

oishi@altech.co.jp 

www.altech.co.jp 

Every other country 

not listed above: 

TOPTICA Photonics AG 

Lochhamer Schlag 19 

D-82166 Graefelfi ng / Munich 

Germany 

Phone: +49 89 85837-0 

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BR-101-029 C 2009-05

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