Tsunami - Beckman Institute Laser Resource Center

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Tsunami Sources for Additional Information The following are some sources for additional information on laser safety standards and safety equipment and training. I - Laser Safety Standards Equipment and Training Safe Use of Lasers (2136.1) American National Standards Institute (ANSI) 11 West 42nd Street New York, NY 10036 Tel: (212) 642-4900 A Guide for Control of Laser Hazards American Conference of Governmental and Industrial Hygienists (ACGIH) 1330 Kemper Meadow Drive Cincinnati, OH 45240 Tel: (5 13) 742-2020 Laser Safety Guide Laser Institute of America 12424 Research Pkwy., Suite 125 Orlando, FL 32826 Tel: (407) 380 1553 Laser Focus World Buyer's Guide Laser Focus World Pennwell Publishing 10 Tara Blvd., 5th Floor Nashua, NH 03062 Tel: (603) 891-0123 Lasers and Optronics Buyer's Guide Lasers and Optronics Gordon Publications 30 1 Gibraltar Dr. P.O. Box 650 Morris Plains, NJ 07950-0650 Tel: (20 1) 292-5 100 Photonics Spectra Photonics Spectra Laurin Publications Berkshire Common P.O. Box 4949 Pittsfield, MA 01202-4949 Tel: (413) 499-0514
Chapter 3 Laser Description General Overview The Tsunami laser head contains the Ti:sapphire rod and the optics that form the resonator cavity. Elements include pump beam mirrors, rod focusing mirrors, an output coupler (OC), a high reflector (HR), beam folding mirrors, dispersion control elements, and tuning elements. A femtosecond (fs)-configured system uses prisms for dispersion control whereas a Gires-Tournois Interferometer (GTI), which also contains the HR, is the dispersion control element in a picosecond @s)-configured system. The fs configuration uses a slit for wavelength selection while the ps configuration uses a birefringent filter. The laser head also houses the GTI high-voltage circuit for the ps configuration. For your convenience, the major tuning controls are located on top of the unit, outside the laser head. Connections to the head include power and control from the Model 3955 electronics module, power and control from the optional Model 3930 Lok-to- Clock" electronics module, nitrogen gas from the Model 3910 purge unit, and cooling water from the chiller. The Model 3955 electronics module included with the laser contains heater and driver circuits for the mode locker and for the GTI. All indicators and controls are located on the front panel, and three cables connect it to the laser head input bezel: the control ribbon cable and the mode locker and photodiode BNC cables. The optional Lok-to-Clock system provides phase-locked loop (PLL) stabilization of output pulses and allows you to precisely synchronize the output pulses to either its internal 80 MHz reference source or to an external one, such as an rf synthesizer, or to another mode-locked laser. The Model 3930 Lok-to-Clock electronics module contains the PLL circuit and the drive circuits for the MI HR motor drive and M4 PZT-controlled mirror (Figure 3-3 and Figure 3-4). Two cables connect the Model 3930 to the laser head input bezel: the control ribbon cable and the photodiode BNC cable. The Model 3930 is the same shape and size as the Model 3955 and should be placed under the Model 3955. Chapter 8 contains a complete description of the Lok-to-Clock system. The Model 3910 purge regulatorlfilter unit connects between an external nitrogen gas supply and the laser head, and it removes dust and water vapor from the gas and provides clean, dry nitrogen to purge the sealed laser head. A flow gauge, flow control knob, and the gas idout connections are located on the front panel.
Page 1: Tsunami Mode-locked Ti: sapphire La
Page 5 and 6: Table of Contents ... Preface .....
Page 7 and 8: Table of Contents . Chapter 6: Alig
Page 9 and 10: Table of Contents Chapter 10: Optio
Page 11 and 12: Table of Contents Figure 4-7: Typic
Page 13 and 14: Table of Contents Figure A-6: The f
Page 15: Warning Conventions The following w
Page 19: List of Abbreviations Used in this
Page 22 and 23: Tsunami Figure 1-1: The Tsunami Las
Page 25 and 26: Chapter 2 Laser Safety DANGER The T
Page 27 and 28: Laser Safety CA UTlON Use of contro
Page 29: 1 1 1 Il I 11 I I 1 El l11111II~Ill
Page 33 and 34: Laser Description growth techniques
Page 35 and 36: Laser Description - AOM OC n Fast P
Page 37 and 38: Laser Description 2.4 - 2.2 - 2.0 -
Page 39 and 40: I IIIIIN III I I 1 I 11111 i~ I I I
Page 41 and 42: I II li I I I i 1 il I 1 11 I 1 1 1
Page 43: I Laser Description . Outline Dimen
Page 46 and 47: Tsunami Input Bezel Connections The
Page 48 and 49: Tsunami Opto-Mechanical Controls Al
Page 50 and 51: Tsunami Blue Knob: Vertical Adjust
Page 52 and 53: ~lpl~ f \ Tsunami Opto-Mechanical C
Page 54 and 55: Tsunami Figure 4-7: 'Qpical MONITOR
Page 56 and 57: Tsunami r @ Spectra-Physics - - 4 2
Page 58 and 59: Tsunami Laser Installation Installi
Page 60 and 61: Tsunami Setting up the Routing Mirr
Page 62 and 63: Tsunami Aligning the Tsunami Laser
Page 64 and 65: Tsunami A -----------. PHOTODIODE O
Page 66 and 67: Tsunami Removing the Purge Line fro
Page 68 and 69: Tsunami Motorized Mount "Dm-shaped
Page 70 and 71: Tsunami I I J3 3930 - - - #,-,I --J
Page 72 and 73: Tsunami CA UTION DO NOT remove or a
Page 74 and 75: Tsunami Refer to the tables at the
Page 76 and 77: Tsunami b. Move the stage by hand a
Page 78 and 79: Tsunami There will be one or two re
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Tsunami Figure 6-9: The Slit Contro
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Tsunami b. Place a white card with
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Tsunami Aligning the Photodiode PC
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Tsunami To measure pulses, use a Sp
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Tsunami pulses, adjust the coarse c
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Tsunami Selecting, Installing, and
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Tsunami Unless you are certain the
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Tsunami Prism Translation Adjust Fi
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Tsunami i. Route the GTI heater cab
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Tsunami Figure 6-18: Pr1/Pr4 prisms
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Tsunami Converting Between fs and p
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Tsunami b. Using an ir viewer, adju
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Tsunami g. Open the shutter. 15. Al
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Tsunami 10. Move Prl and Pr4 into t
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Tsunami 21. Mode lock Tsunami. Refe
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I " n 3 1 ' ! ' I . I 8 8 8 " t 8 0
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Tsunami recommend using 99.999% pur
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Tsunami Mode Locking the Laser 6. W
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Tsunami - - - 710 nrn - - 790 nrn -
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4 Tsunami Beam % 2 mm (0.08 in.) Pr
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Tsunami Table 7-1: Bi-fi Selection
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I I1 ! I : I I I ill 8 I !Il! I1I l
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Lok-to-Clock Electronics LEVEL cont
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Lok-to-Clock Electronics AOM M5f-4
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Lok-to-Clock Electronics Installing
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I I1 I i l l I iil 111 ,111 Ill ,il
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P Lok-to-Clock Electronics Model 20
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I 1 1 I 1~~~ 11 I 1 1 1 1 .III :ill
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Lok-to-Clock Electronics Figure 8-9
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I I1 I l I 1 bll Lok-to-Clock Elect
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Tsunami "Clean" is a relative descr
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Tsunami Figure 9-1: Drop and Drag M
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Tsunami With the exception of pump
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Tsunami On rare occasions, the lowe
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Tsunami 8. Open the pump laser shut
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Tsunami 7. Remove the screws (4) ho
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Tsunami DryJClean Flow Adjust Nitro
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Tsunami diode such as the Model 393
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€968-PEP0 ES68-PEP0 PS68-PEP0 ES6
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Tsunami Check marks indicate which
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Tsunami Table 10-11: GTI and Bi-Pi
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Tsunami Generic Troubleshooting (No
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Tsunami Symptom: Laser will not mod
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Tsunami Symptom: Unable to mode loc
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Tsunami Symptom: Unable to mode loc
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Tsunami Symptom: Cannot see individ
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Tsunami Symptom: PZT oscillates whe
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I I ill ; I l l I I lll.l1 I I I *
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I I 111 il I iil i lllill ll I I ll
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I I il : I I I 1 I Appendix A Mode
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Mode Locking is chosen to be the sa
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I I 0 I I 1 I )I Ulllllll ill I Mod
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Mode Locking SPM will, thus, broade
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Mode Locking The net intracavity GV
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Appendix B Pulse Width Measurement
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I I 0 I I 1 1 LI I lillll Ill I!,ll
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Pulse Width Measurement -% GVD Comp
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I I I I I I I I ti 911 I1 I Pulse W
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I I I I I I B I IL 1 1 i 1111 I L I
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I I 0 I I 1 1 L I I Pulse Width Mea
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Appendix C Setting the Line Voltage
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Appendix D Material Safetv Data She
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Material Safety Data Sheets MATERIA
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I I I 1 r $1 I Bill II I I I I Ill
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Material Safety Data Sheets MATERIA
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