Tsunami - Beckman Institute Laser Resource Center

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<strong>Tsunami</strong> 7. Remove the screws (4) holding the input and output cover plates in I place and remove the cover plates to expose the crystal. , 8. Clean the two sides of the crystal using a folded tissue and hemostat as described in step 3 of "General Procedure for Cleaning Optics." WARNING The small wires attached to the crystal can be easily broken. Do not pull too hard on them. 9. When finished cleaning, reverse steps 2 through 7 to install the AOM in the laser. 10. Open the pump laser shutter and adjust MI and Mlo vertically and horizontally for maximum output power. Do not adjust the slide. If realignment of the AOM is required, refer to chapter 6, "Alignment: Aligning the NO modulator (AOM)." Beam Splitter Because the beam splitter is outside the cavity and covered by a housing, and because the laser head is sealed and purged, it is unlikely the beam splitter will require cleaning. We urge you to refrain from doing so. 1. Close the pump laser shutter. 2. Remove the beam splitter by unscrewing its holder from the mount (Figure 9-4). 3. Remove the optic from its holder, and follow step 2 of "General Procedure for Cleaning Optics" to clean both sides. 4. Install the optic in its holder (either side can face upward), and screw the holder back into place. Take care not to cross-thread the holder. 5. Because of the wedge-shape of the beam splitter, the photodiode pc board might require realignment. Refer to chapter 6, "Alignment: Aligning the Photodiode PC Board." 6. Open the pump laser shutter. Routing Mirrors Because the routing mirrors are outside the cavity and are enclosed, it is unlikely they will require cleaning unless the dust tubes are removed for a long period of time. Cleaning them is easy. Refer to Figure 5-2. 1. To access the mirror, unscrew the two screws on top of the unit and remove the cover. 2. Clean the mirror in place using a folded tissue and hemostat as described in step 3 of "General Procedure for Cleaning Optics." 3. Replace the cover and the two screws.
Maintenance - - I Replacing Filters in the Model 3910 Purge Unit The schedule for replacing the filters and dryerhieve assembly depends on the amount and quality of purge nitrogen used. Change all three filters (Figure 9-5) when the blue desiccant in the sieve assembly turns pink. In some areas, the indicator dye in the desiccant is considered a hazardous material. Consult your materials manager and/or local government environmental agency for guidelines on proper disposal methods. Refer to the Material Safety Data.Sheets in appendix D for information on the materials contained in these filters. Part numbers for filters are listed in Table 11-3, "Model 3910 Purge Unit Filter Hardware." To replace the filters and sieve assembly: 1. Turn the unit upside down with the flow gauge facing away from you, and remove the small screws (2) on the side nearest you. 2. Disconnect the filter assembly from the flow gauge and output port. Press in on the connector spring-clips and pull out the hoses. 3. Rotate the entire filter assembly so the small filters point upward, then move the assembly to the right (away from the flow gauge) and lift it out. 4. Remove the filter hose fittings. Note the placement and orientation of each filter before disassembling the hoses (Figure 9-5). Loosen the screws and remove the filter assemblies. 5. Discard the filter assemblies. 6. Assemble a new filter assembly from new parts. The screws at each end of the two small filters should be tight. However, over-tightening will crack the plastic. 7. Place the new filter assembly in the box and connect and secure it in reverse order of disassembly. Push the hose fittings into their mating connectors until they snap into place.
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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 -
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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
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Tsunami Removing the Purge Line fro
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Tsunami Motorized Mount "Dm-shaped
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Tsunami I I J3 3930 - - - #,-,I --J
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Tsunami CA UTION DO NOT remove or a
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Tsunami Refer to the tables at the
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Tsunami b. Move the stage by hand a
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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
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 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
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 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
Page 166 and 167: Tsunami Symptom: Laser will not mod
Page 168 and 169: Tsunami Symptom: Unable to mode loc
Page 170 and 171: Tsunami Symptom: Unable to mode loc
Page 172 and 173: Tsunami Symptom: Cannot see individ
Page 174 and 175: Tsunami Symptom: PZT oscillates whe
Page 177 and 178: I I ill ; I l l I I lll.l1 I I I *
Page 179 and 180: I I 111 il I iil i lllill ll I I ll
Page 181 and 182: I I il : I I I 1 I Appendix A Mode
Page 183 and 184: Mode Locking is chosen to be the sa
Page 185 and 186: I I 0 I I 1 I )I Ulllllll ill I Mod
Page 187 and 188: Mode Locking SPM will, thus, broade
Page 189 and 190: Mode Locking The net intracavity GV
Page 191 and 192: Appendix B Pulse Width Measurement
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Page 195 and 196: Pulse Width Measurement -% GVD Comp
Page 197 and 198: I I I I I I I I ti 911 I1 I Pulse W
Page 199 and 200: I I I I I I B I IL 1 1 i 1111 I L I
Page 201 and 202: 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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