Tsunami - Beckman Institute Laser Resource Center

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Tsunami - - - 710 nrn - - 790 nrn ----- 850 nrn 900 nrn . . . . . . 1053 nrn 25 1 30 BANDWIDTH (nm) Figure 7-3: Bandwidth vs Pulse Width for a Transform-limited sech2 Pulse Shape. Selecting Wavelength, ps configuration (Using the Birefringent Filter) Use an ir viewer, beam splitter, suitable attenuator, and a monochromator to monitor the Tsunami laser as you perform the following procedure. 1. Using the ir viewer, beam splitter, and attenuator, pick off a portion of the Tsunami output beam, attenuate it, and center it on the input slit of the monochromator (refer to the monochromator manual for instructions). 2. Set the monochromator wavelength to the desired laser operating wavelength. 3. Adjust the birefringent filter (bi-fi) micrometer to tune the laser until the ir viewer detects light exiting the monochromator, then optimize the output from the monochromator. 4. Adjust the GTI POSITION control for shortest pulse. 5. Perform the procedure outlined under "Optimizing Laser Output" earlier in this chapter. This completes the ps wavelength selection procedure.
Operation Operating with the Ultrashort Pulse Option (USP) The USP option allows operation of the Tsunami laser in the standard wavelength region (720 - 850 nm) with < 50 fs output pulses. The basic operation of the USP option with regard to pump power, Pr2/Pr3 adjustment, slit width adjustment, etc., is identical to laser operation in the standard fs regime. However, the USP option uses prisms with a lower refractive index which requires less glass to be inserted into the beam in order to produce short output pulses. Operating in the Broad Femtosecond Regime (150fs-1 PS) Tsunami System Verification The Tsunami laser is capable of providing pulses in the range of 150 fs to 1 ps by using a combination of special GTIs and the prism sequence used for dispersion compensation. Verify the following before you start the conversion process for broad fs pulses: 1. Verify that the coarse and fine PHASE settings on the Model 3955 are correct. Refer to chapter 6, "Alignment: Coarse Phase Adjustment ...," for information on setting the coarse and fine PHASE controls. 2. Venfy the beam is centered on the Mlo and that output power is optimized. Conversion for Broad Femtosecond Operation If the beam is not centered on Mlo, refer to "Optimizing Laser Output'' earlier in this chapter to "walk the beam" and recenter it on MI and the Mlo. 1. Replace the M1 HR with the appropriate GTI. Refer to chapter 5, "Installation: Installing the GTI." 2. Place a white card in front of M5 and adjust the GTI vertical and horizontal controls to overlap the two fluorescent images from M1 and M3 on the card so they form a cross. Once overlapped, the laser should lase when you remove the card. 3. Adjust the GTI vertical and horizontal controls to optimize output power. 4. Select the desired wavelength using the slit wavelength selector.
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Tsunami Mode-locked Ti: sapphire La
Page 5 and 6:
Table of Contents ... Preface .....
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Table of Contents . Chapter 6: Alig
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Table of Contents Chapter 10: Optio
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Table of Contents Figure 4-7: Typic
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Table of Contents Figure A-6: The f
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Warning Conventions The following w
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List of Abbreviations Used in this
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Tsunami Figure 1-1: The Tsunami Las
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Chapter 2 Laser Safety DANGER The T
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Laser Safety CA UTlON Use of contro
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1 1 1 Il I 11 I I 1 El l11111II~Ill
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Chapter 3 Laser Description General
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Laser Description growth techniques
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Laser Description - AOM OC n Fast P
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Laser Description 2.4 - 2.2 - 2.0 -
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I IIIIIN III I I 1 I 11111 i~ I I I
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I II li I I I i 1 il I 1 11 I 1 1 1
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I Laser Description . Outline Dimen
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Tsunami Input Bezel Connections The
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Tsunami Opto-Mechanical Controls Al
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Tsunami Blue Knob: Vertical Adjust
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~lpl~ f \ Tsunami Opto-Mechanical C
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Tsunami Figure 4-7: 'Qpical MONITOR
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Tsunami r @ Spectra-Physics - - 4 2
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Tsunami Laser Installation Installi
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Tsunami Setting up the Routing Mirr
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Tsunami Aligning the Tsunami Laser
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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
Page 80 and 81: Tsunami Figure 6-9: The Slit Contro
Page 82 and 83: Tsunami b. Place a white card with
Page 84 and 85: Tsunami Aligning the Photodiode PC
Page 86 and 87: Tsunami To measure pulses, use a Sp
Page 88 and 89: Tsunami pulses, adjust the coarse c
Page 90 and 91: Tsunami Selecting, Installing, and
Page 92 and 93: Tsunami Unless you are certain the
Page 94 and 95: Tsunami Prism Translation Adjust Fi
Page 96 and 97: Tsunami i. Route the GTI heater cab
Page 98 and 99: Tsunami Figure 6-18: Pr1/Pr4 prisms
Page 100 and 101: Tsunami Converting Between fs and p
Page 102 and 103: Tsunami b. Using an ir viewer, adju
Page 104 and 105: Tsunami g. Open the shutter. 15. Al
Page 106 and 107: Tsunami 10. Move Prl and Pr4 into t
Page 108 and 109: Tsunami 21. Mode lock Tsunami. Refe
Page 110 and 111: I " n 3 1 ' ! ' I . I 8 8 8 " t 8 0
Page 112 and 113: Tsunami recommend using 99.999% pur
Page 114 and 115: Tsunami Mode Locking the Laser 6. W
Page 118 and 119: 4 Tsunami Beam % 2 mm (0.08 in.) Pr
Page 120 and 121: Tsunami Table 7-1: Bi-fi Selection
Page 123 and 124: I I1 ! I : I I I ill 8 I !Il! I1I l
Page 125 and 126: Lok-to-Clock Electronics LEVEL cont
Page 127 and 128: Lok-to-Clock Electronics AOM M5f-4
Page 129 and 130: Lok-to-Clock Electronics Installing
Page 131 and 132: I I1 I i l l I iil 111 ,111 Ill ,il
Page 133 and 134: P Lok-to-Clock Electronics Model 20
Page 135 and 136: I 1 1 I 1~~~ 11 I 1 1 1 1 .III :ill
Page 137 and 138: Lok-to-Clock Electronics Figure 8-9
Page 139: I I1 I l I 1 bll Lok-to-Clock Elect
Page 142 and 143: Tsunami "Clean" is a relative descr
Page 144 and 145: Tsunami Figure 9-1: Drop and Drag M
Page 146 and 147: Tsunami With the exception of pump
Page 148 and 149: Tsunami On rare occasions, the lowe
Page 150 and 151: Tsunami 8. Open the pump laser shut
Page 152 and 153: Tsunami 7. Remove the screws (4) ho
Page 154 and 155: Tsunami DryJClean Flow Adjust Nitro
Page 156 and 157: Tsunami diode such as the Model 393
Page 158 and 159: €968-PEP0 ES68-PEP0 PS68-PEP0 ES6
Page 160 and 161: Tsunami Check marks indicate which
Page 162 and 163: Tsunami Table 10-11: GTI and Bi-Pi
Page 164 and 165: 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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Tsunami - Beckman Institute Laser Resource Center

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