Laser Diode Products for the OEM - Power Technology, Inc.

D Option: Digital Control (Continued)
OPTIONS & ACCESSORIES
PH 501.407.0712 / FAX 501.407.0036 / sAles@PowertecHnology.com / www.PowertecHnology.com
Options
OPTION DESCRIPTION RESOLUTION
D1 Digital Automatic Power Control 100 steps
D2 Digital Constant Current Control 100 steps
D3 Digital Temperature Control 100 steps
D4 High Resolution Digital Automatic Power Control 256 steps
D4b High Resolution Digital Automatic Power Control 512 steps
D5 High Resolution Digital Constant Current Control 256 steps
D5b High Resolution Digital Constant Current Control 512 steps
D6 High Resolution Digital Temperature Control 256 steps
D6b High Resolution Digital Temperature Control 512 steps
E Option: External Fan Switch
A fan switch is used to disable a laser’s internal fan, resulting in less optical noise. This option is available
for APM, APMT, PPM, and PPMT modules. The addition of this option negates the diode warranty.
F Option: Fiber Coupling
Fiber coupling is a method used to couple a laser’s output into a fiber optic. We couple fibers directly
to the laser module, not the diode. Depending on the laser assembly ordered, the module will contain a
length of single mode or multimode fiber, along with the appropriate connectors. The standard fiber length
is 1 meter, but longer fibers are also available by special order.
A single mode fiber allows light to travel along a single path through the middle of the fiber core.
This type of fiber is typically used for applications requiring ultra-high quality light output and is available
as an option for many of our temperature controlled laser modules. For single mode fibers, we recommend
a 4µm core for visible wavelengths and a 9µm core for IR wavelengths. Each of our fibers has a
3mm jacket. All single mode fibers are permanently attached to the module and can be terminated in an
ST or FC connector.
A multimode fiber enables light waves to travel simultaneously along multiple paths within the core.
Because the core of a multi-mode fiber is larger than that of a single mode, multimode fibers tend to be
useful for less wavelength-sensitive applications. For multimode fiber applications, we offer 50µm, 62.5µm,
100µm, and 200+µm fibers. Each can be terminated in an FC or SMA connector. SMA is standard. Our F1
multimode fiber coupling option provides a removable fiber, while the remaining options below provide
fibers that are permanently attached to the module.
FC Connector
SMA Connector
k Single mode fibers
allow light to travel
along a single
path through the
middle of the fiber
core
k Multimode fibers
enable light waves
to travel simultaneously
along multiple
paths within
the core
OPTION DESCRIPTION FIBER POLISH
F1 Multimode fiber with SMA 905 connector Physical contact
F2 Single mode fiber with FC connector Physical contact
F7 Multimode fiber with FC connector Physical contact
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