Tsunami - Beckman Institute Laser Resource Center

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Tsunami Selecting, Installing, and Aligning the Birefringent Filter (ps Systems Only) There are two birefiingent filter (bi-fi) sets that cover the Tsunami ps wavelength range. The "A" plate bi-fi has a yellow dot on the filter ring, the "B" plate bi-fi has a white dot. Use the "A" plate with the blue, standard, long, or extra-long optic sets. Use the "B" plate with the midrange optic set. CAUTION The alignment of each filter stack is set at the factory and does not require adjustment. Never try to disassemble the stack. Once you have chosen a wavelength at which to operate, select a filter and follow the procedure below to install and align it. Use Table 6-2 to select your filter. A monochromator is required for this procedure. 1. Close the pump laser shutter. 2. Set the bi-fi micrometer to it maximum clockwise position. 3. Install the appropriate filter in the holder. a. Place the filter in the holder. b. Rotate the filter until the pair of setscrew holes on the outer edge of its ring (Figure 6-3) is near the position listed in Table 6-2 for your wavelength. Note: the "12 o'clock" position is the highest point and is nearest you as seen from the output bezel. This gets you close. c. Open the pump laser shutter. d. While watching the monochromator throughput from the Tsunami, rotate the filter slightly by hand until you obtain the lower wavelength listed in Table 6-2. e. Close the pump laser shutter. Table 6-2: Bi-Fi Alignment for the Nominal 2 ps Systems Optic Set Plate Type1 Dot Color Setscrew Position (o'clock) Lowest Wavelength Highest Wavelength * Blue (8) Standard (S) ANellow ANellow 1 :00 to 2:00 12:OO to 1 :00 688 nm 715 nm 790 nm 850 nm Mid-range (M) BANhite 1 :00 to 2:00 775 nm 900 nm Long (L) X-long (X) ANellow ANellow 1 :00 to 2:00 12:OO 835 nm 965 nm 1000 nm 1080 nm
Alignment f. Tighten the setscrew (Figure 6-3). 4. Open the pump laser shutter. 5. Recenter the beam on the M1 GTI using the M2 vertical and horizontal mirror controls. 6. Adjust MI to overlap the fluorescent spots and re-establish lasing. 7. Rotate the micrometer counterclockwise as far as needed to verify that the Tsunami at least reaches the upper wavelength listed in Table 6-2. This completes the bi-fi alignment. Converting Between Non-overlapping Optics Sets This procedure contains instructions for changing non-overlapping optics sets. An ir viewer is required for this procedure. DANGER: LASER RADIATION This procedure requires you to replace optics while using the laser at high power. For safety, close the pump laser shutter every time you change an optic, and only open it during alignment. Protect yourself with appropriate eyewear at all times. During this procedure, replace and align each optic one at a time, starting with MI. Refer to Figure 6-14 or Figure 6-15 as you proceed. When you replace the first optic with one from a different set, the laser will no longer lase. Therefore, you align the system by referencing fluorescent spots, not the laser beam. The spots will appear on each optic and on a card placed in front of the output window. With the exception of pump mirror PI and the GTI (ps configuration), all mirrors are captured and held in place by a screw-in holder. Unscrew the holder and the mirror comes out with it. The optic is retained by a small O-ring and can be removed by simply pulling it straight out of the holder. Do not press on the optical surface when reinstalling the optic to its holdel; and always hold it by the barrel. The v-shaped arrow on the barrel points to the coated, intracavity surface. When screwing the holder back in, finger tight is sufficient-excessive force will damage the optic. Read the part number printed on the barrel to verify the correct optic is being installed. Optic descriptions and their part numbers are found in tables in chapter 10, "Options and Accessories." CAUTION Always use clean finger cots or powderless gloves when handling optics.
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Tsunami Mode-locked Ti: sapphire La
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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 -
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
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 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
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Page 112 and 113: Tsunami recommend using 99.999% pur
Page 114 and 115: Tsunami Mode Locking the Laser 6. W
Page 116 and 117: Tsunami - - - 710 nrn - - 790 nrn -
Page 118 and 119: 4 Tsunami Beam % 2 mm (0.08 in.) Pr
Page 120 and 121: Tsunami Table 7-1: Bi-fi Selection
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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
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Page 133 and 134: P Lok-to-Clock Electronics Model 20
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Page 137 and 138: Lok-to-Clock Electronics Figure 8-9
Page 139: 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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