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Section 3: System Operation

996-0207

Note:

If there is no laser output press SELECT button for Pulse Division

and verify that display is >P00 (normal is P01).

2. The

can be disconnected from PCU or left connected as desired.

Harmonics optimization

Abbreviations used for Continuum harmonics are as follows:

•

SLD

Surelite doubler

•

SLT

Surelite third harmonic

•

SLF

Surelite fourth harmonic.

Содержание Surelite EX 10

Страница 1: ...Operation and Maintenance Manual for Surelite Lasers 140 Baytech Drive San Jose CA 95134 ph 888 532 1064 ph 408 727 3240 fax 408 727 3550...

Страница 2: ...eserved This publication is protected by copyright Copying disclosure to others or other use of this publication in part or in whole is prohibited without express written consent of Continuum Continuu...

Страница 3: ...fety Features 9 Interlocks 9 Laser covers 9 Exit shutter 10 Safety Labels 10 Government and industry safety regulations 14 References for safety regulations 15 Section 2 Installation 17 Installation r...

Страница 4: ...Installation removal of harmonic generators 36 Installation of SLD 36 Installation of SLT or SLF 37 Removal 38 RS232 serial port 40 Software 40 To enable RS232 40 Control commands 42 To disable RS232...

Страница 5: ...k loop 60 To enable external interlock 60 Security installation 61 To disable external interlock 61 Cooling Group CG 62 General description 62 Internal features 62 Maintenance 63 Section 5 Maintenance...

Страница 6: ...ts servicing 85 Service center information Visit the Continuum Web Site for complete information 86 Appendix A PIV Operation and Maintenance 87 PIV description 87 Particle Image Velocimetry 87 PIV ove...

Страница 7: ...eam alignment 92 Crystal phase matching 93 Beam power balance 93 Flashlamp voltage 93 External control 93 Maintaining PIV optics 94 Cleaning or replacing the SHG crystal 94 PIV Specifications 95 Appen...

Страница 8: ...Continuum Surelite Laser 6 996 0207 This page is intentionally blank...

Страница 9: ...SLF OUTPUT FACE 39 FIGURE 26 WIRING DIAGRAM AND PIN DESIGNATION 40 FIGURE 27 SURELITE CHRONOGRAPH 47 FIGURE 28 OVERVIEW OF SURELITE LASER BENCH 49 FIGURE 29 811U 06 LASER HEAD WITH ONE FLASHLAMP 51 FI...

Страница 10: ...07 FIGURE 50 REAR MIRROR HORIZONTAL AND VERTICAL CONTROLS 74 FIGURE 55 SURELITE PHYSICAL DIMENSIONS 83 FIGURE 56 PIV OPTICAL LAYOUT 89 FIGURE 57 PIV OPTICAL HEAD PACKAGE DIMENSIONS 90 FIGURE 58 PIV PO...

Страница 11: ...nts are listed as is the initial installation process step by step The Operation section begins with the daily startup and shutdown procedures The single shot operation is discussed here also The LED...

Страница 12: ...Continuum Surelite Laser 2 996 0207 This page is intentionally blank...

Страница 13: ...Installation comprend une copie des instructions de montage pour future r f rence Les exigences de site sont num r es comme l est le processus d installation initial tape par tape La section Fonction...

Страница 14: ...ination du fonctionnement libre sont expliqu es L Annexe d crit la garantie Continuum et fournit les num ros de t l phone et de fax du service apr s vente Les Notes de l Utilisateur offrent l utilisat...

Страница 15: ...zuk nftigen Bedarf ein Exemplar der Installationsanleitung Hier sind sowohl die Standortanforderungen als auch eine schrittweise Erl uterung der Erstinstallation enthalten Der Abschnitt zum Betrieb be...

Страница 16: ...07 Der Anhang enth lt die Continuum Garantie sowie Service Rufnummern und Faxnummern unter denen weitere Hilfestellung verf gbar ist Unter Benutzernotizen kann der Benutzer bequem Wartungsdaten und so...

Страница 17: ...nd skin damage Infrared radiation passes easily through the cornea which focuses it onto the retina where it can cause instantaneous permanent damage or blindness Even small doses from scatter can be...

Страница 18: ...ar traffic aircraft or any airborne objects by means of laser radiation is prohibited Never leave laser running unattended LASER RADIATION Wear laser protective eyewear of sufficient optical density a...

Страница 19: ...res Interlocks The Surelite has interlock switches which stop it from firing when the laser head rod temperature is too high laser head cover is open cooling water flow is too low external interlock i...

Страница 20: ...ut the Surelite laser Refer to diagrams A B for their location Safety Labels The following safety labels are used throughout the Surelite laser Refer to Figure 1 Figure 2 Figure 3 and Figure 4 on page...

Страница 21: ...022 Found on the power supply side of the Power Control Unit Item 8 310 0026 Found on the top of the Marx Bank box Item 9 310 0028 Found on the 811 Laser Head Item 10 310 9077 Found on the Oscillator...

Страница 22: ...Continuum Surelite Laser 12 996 0207 Item 12 310 0019 Found above the input on the Surelite Separation Package SSP Item 13 310 0140 Found on back panel of Power Control Unit...

Страница 23: ...ection 1 Laser Safety Precautions 996 0207 13 Figure 1 Location of labels on the Surelite oscillator Figure 2 Location of labels on Surelite Separation Package SSP Figure 3 Labels on the 811 Laser Hea...

Страница 24: ...dards Institute ANSI a member of the International Organization for Standardization ISO and the International Electrotechnical Commission IEC has published a booklet on laser safety standards Continuu...

Страница 25: ...ept of Health Human Services Public Health Service Food Drug Administrations April 1988 American National Standard for the Safe Use of Lasers Laser Institute of America 1986 Laser Safety Guide Laser I...

Страница 26: ...Continuum Surelite Laser 16 996 0207...

Страница 27: ...m in an air conditioned room placed so that no vents blow directly on the laser and the laboratory temperature does not exceed 85 F 29 4 C The laser should be mounted on a solid work table that includ...

Страница 28: ...r better water from a glass distiller will meet this requirement 50 ml of methanol reagent grade or better for cleaning optics Lens tissue Laser safety glasses for the fundamental infrared and its har...

Страница 29: ...holding the front of the crate 3 Remove the top of the crate and set it aside Carefully release the last two clamps on front of the crate and set aside This front side of the crate is marked ramp and...

Страница 30: ...uctions in the crate for future repacking Installation HIGH VOLTAGE The laser head and power supply contain lethal voltages and currents Never operate the laser with the power supply cover removed HIG...

Страница 31: ...strap from umbilical and connect to ground lug at rear of PCU 6 Take the head plug cable marked FLASHLAMP from rear of PCU uncoil it and plug into socket at rear of laser bench Remember to tighten the...

Страница 32: ...utes while checking for water leaks at the rear and inside the PCU 6 If no leaks are detected shut the system down and reinstall the cooling group cover panel Measure total energy 1 On the Error Refer...

Страница 33: ...button to open for 30 minutes after the red AC POWER toggle is first turned on 4 Measure power coming from the exit port and compare with the value for total energy indicated in QA 5 If power is comp...

Страница 34: ...Continuum Surelite Laser 24 996 0207 Figure 11 Rear panel SL I 20 PCU Figure 12 Front panel SL I 20 PCU Figure 13 Optical Surelite Separator Package SSP...

Страница 35: ...kit 507 1000 201 0004 203 0019 507 1005 5 812V 09 head vertical Rod Flashlamp O ring kit 507 0900 201 0005 203 0032 507 0905 6 Intra cavity shutter 619 1438 619 1438 619 1438 7 Mirror Gaussian 10 Hz 1...

Страница 36: ...Continuum Surelite Laser 26 996 0207 This page is intentionally blank...

Страница 37: ...be verified in the laser heads Flashlamp discharge frequency Displays the last saved rep in Hertz flashes second 4 Press the SELECT button and toggle the LED display through these six modes to verify...

Страница 38: ...r an extended period of time Display readouts This is an explanation of the 3 digit LED readout that appears on the front panel of the Power Cooling Unit The explanations are listed in the order in wh...

Страница 39: ...Indicates that the serial mode of operation through the RS232 port is off and the system is running on its own internal clock commands Son Indicates that the serial mode of operation through the RS23...

Страница 40: ...with your system in the Accessories Box It is approximately 15 ft 4 5 m long has a momentary push button switch at one end and a BNC connector at the other 3 Connect the Single Shot cable to BNC conne...

Страница 41: ...for Pulse Division and verify that display is P00 normal is P01 2 The SS can be disconnected from PCU or left connected as desired Harmonics optimization Abbreviations used for Continuum harmonics ar...

Страница 42: ...harmonic crystal model SLD 2 must be used Using the second harmonic crystal model SLD 1 will lower 532 nm energy by 25 3 Install 532 nm dichroics in Continuum s optional Surelite Separation Package S...

Страница 43: ...at properly 3 Locate the second harmonic crystal model SLD 1 and install See procedure on page 36 Note For maximum 355 nm energy the second harmonic crystal model SLD 1 must be used with the third har...

Страница 44: ...ity 7 Pulsewidth 1 ns less than input of 1 064 nm Polarization 95 horiz Linewidth cm 1 1 0 Performance Parameters at 266 nm 1 Shut down laser system 2 Remove housing cover and its cover plate shown on...

Страница 45: ...nuous operation 13 Locate the SLT SLF adjust knob on the side of laser housing assembly and slowly rotate knob for maximum energy You should not have to rotate more than one full turn either clockwise...

Страница 46: ...ure 16 SSP 1 A 2 A 3 A 4 A optical layout top view cover off Figure 17 SSP mirror mount Figure 18 SSP output face Figure 19 SSP output face Installation removal of harmonic generators Installation of...

Страница 47: ...ver Installation of SLT or SLF NECESSARY EQUIPMENT Phillips 2 screwdriver Third harmonic generator SLT or fourth harmonic generator SLF STEPS 1 Shut the system down by performing Daily Shutdown Proced...

Страница 48: ...use a 2 5 mm Allen key to remove the 3 deeply recessed 35 mm M3 Allen bolts located in the mounting holes on the output face See drawings on page 39 SLT turn locking collar counter clockwise until the...

Страница 49: ...System Operation 996 0207 39 Figure 20 Top view of heater connectors Figure 21 SLD ouput face Figure 22 SLD input face Figure 23 Harmonics side view Figure 24 SLT SLF input face Figure 25 SLT SLF out...

Страница 50: ...e are Procomm for the Mac Windows 3 x Terminal for the PC Windows 95 98 Hyper Terminal To enable RS232 1 Make up a female to female null modem cable not to exceed 50 ft 15 6m in length See Figure 26 f...

Страница 51: ...on the AC POWER 4 Turn the keyswitch to the ON position 5 Press the SELECT button until SoF is displayed on the LED readout 6 Press the UP ARROW button so that display reads Son The serial port is now...

Страница 52: ...ten exactly as shown using upper case and spaces as indicated For instance SH space 1 return will open the shutter Commands that require a parameter must include leading trailing zeros as in the follo...

Страница 53: ...232 1 With system running transmit the ASCII code ST 0 2 Press START STOP button to off 3 Press SELECT button to Son 4 Press ARROW DOWN button to SoF 5 Resume normal operation Direct Access Triggering...

Страница 54: ...e Q SWITCH SELECT toggle to the EXT position for lowest jitter 7 Start up the Surelite as follows Toggle on AC power Turn keyswitch to ON Press SELECT button until Eof is displayed Press UP ARROWS so...

Страница 55: ...at front of the laser bench 9 Press the START STOP button located of front panel of the PCU to ON 10 Press the SHUTTER button located of front panel of the PCU to ON 11 Input the Fire Command onto pin...

Страница 56: ...ON 11 Input the Fire Command onto pin 7 of the D connector TTL level 5 V 0 V 10 s wide 12 Input Q switch Command onto pin 6 with a delay of 180 s with respect to Fire Command TTL level 5 V 0 V 10 s wi...

Страница 57: ...Section 3 System Operation 996 0207 47 Figure 27 Surelite chronograph...

Страница 58: ...ess it is certain that thermal stabilization has been restored CAUTION Running the system before thermal stabilization has been reached will result in serious damage to your laser system 1 On the fron...

Страница 59: ...202 0266 3 4 plate 108 0001 108 0001 108 0001 4 Dielectric polarizer 199 0116 199 0116 199 0116 5 811U 06 head upper Rod Flashlamp O ring kit 507 0700 201 0056 203 0019 507 0710 5 811U 07 head upper...

Страница 60: ...onsumption These features combine to create the excellent pumping homogeneity required for producing high gain superior quality beams Rods The head is designed to pump Nd 3 doped YAG The doping levels...

Страница 61: ...ashlamp Name Surelite I Surelite II Surelite III 811U 06 head upper Rod Flashlamp O ring kit 507 0700 201 0056 203 0019 507 0710 811U 07 head upper Rod Flashlamp O ring kit 507 1000 201 0004 203 0019...

Страница 62: ...elite laser heads two flashlamps Name Surelite I Surelite II Surelite III 812V 09 head vertical Rod 2 Flashlamps O ring kit 507 0900 201 0005 203 0032 507 0905 Figure 31 812V 09 laser head with two fl...

Страница 63: ...element Quarter wave plate Electrical Timed pulse generated by the PCU unit Marx bank 750 V 750 volt power board POCKELS CELL The Pockels cell has a longitudinal field KD P crystal with a 15 mm clear...

Страница 64: ...g transistors in series so that the voltage on each capacitor is summed This generates an 4 kV pulse with a rise time of 20 ns This board is in a metal box next to the Pockels cell 750 VOLT POWER BOAR...

Страница 65: ...transmitted by the polarizer allowing oscillation to occur Figure 34 Cavity open and lasing Harmonic generators The Surelite series can generate laser light at the Nd YAG fundamental wavelength 1 064...

Страница 66: ...user removable beam dump SSP 1 is needed to separate the YAG second harmonic from the fundamental after doubling SSP 2 is needed to separate either the YAG second or third harmonic from the fundamenta...

Страница 67: ...Section 4 Subassembly and Module Descriptions 996 0207 57 Figure 39 SSP 1 2 3 4 optical layout top view with cover off Figure 40 SSP 1 A 2 A 3 A 4 A optical layout top view cover off...

Страница 68: ...quency of 40 kHz Current from the board charges up the storage capacitor capacitance of 30 F at 2 0 kV In addition to energy storage for the flashlamp the system also provides an initial trigger pulse...

Страница 69: ...operation EXTERNAL 9 pin female plug The optional externals plug for a remote control device External interlock loop See page 60 DAT direct access triggering See page 43 SINGLE SHOT This connector ac...

Страница 70: ...interlock is active continuity must be maintained between pins 1 9 of the external D connector If continuity is broken E06 error message is displayed and the system shuts down This D connector is labe...

Страница 71: ...supply is on the relay will be activated the SPST switch will be closed and the Surelite can run Also install a momentary switch in parallel with the SPST switch so that if you wish to shut down the m...

Страница 72: ...laser The pressure volume characteristics of the cooling water pump are matched to the laser head power dissipation flow requirements Internal features Referring to the assembly drawing the pressure f...

Страница 73: ...ble connects directly to the PU side Maintenance Remove the eight screws holding the cooling group metal cover The deionizing filter cartridge Continuum Part 313 0099 will be visible at the top The fi...

Страница 74: ...Continuum Surelite Laser 64 996 0207 Figure 45 Cooling group chassis assembly for Surelite I 20 Hz...

Страница 75: ...refully cleaned with soft optical tissue and either reagent grade methanol or isopropyl alcohol NECESSARY EQUIPMENT reagent grade or better methanol hemostat surgical pliers finger cots or surgical st...

Страница 76: ...head plug cable at the rear of the laser bench by unscrewing the threaded collar large green black military style connector See drawing on page 36 5 Disconnect the two leads that run to the thermal sw...

Страница 77: ...to make sure the lamp is centered in the head and then bolt the lamp retainers in place Tighten screws for snug fit Do not over tighten 18 Place the laser head in base cradle while checking orientati...

Страница 78: ...and pull it off the barbed connectors on both ends of the filter 7 Unscrew the barbed elbow fittings from old DI filter Replace the old teflon tape with new and screw the fit tings into the new DI fi...

Страница 79: ...Section 5 Maintenance 996 0207 69 Figure 47 Cooling group chassis without fans on the front panel Figure 48 Cooling group chassis assembly for Surelite I 20 Hz...

Страница 80: ...Continuum Surelite Laser 70 996 0207 This page is intentionally blank...

Страница 81: ...erlock switches with your finger If manually activating the switches with your hand eliminates the error message then reposition the switches higher on the bracket Check with an ohmmeter for continuit...

Страница 82: ...shes but there is no lasing output Verify that the Pulse Division readout panel display is set at P01 and not P00 Verify that the SHUTTER button is depressed and the intra cavity shutter is no longer...

Страница 83: ...k for free running Check for damaged optics Replace the flashlamp Check cooling group for contamination page 77 Make a list of damaged optics contact Continuum page 66 page 80 No Lasing Perform electr...

Страница 84: ...Perform the System Startup procedure page 27 Burn paper alignment This section describes specific procedures for aligning and optimizing oscillator performance NECESSARY EQUIPMENT Kodak Linagraph pape...

Страница 85: ...cavity shutter by depressing the SHUTTER button 8 Remove the burn paper from the bag and examine the pattern Note Remember the orientation of the paper when the burn is taken This will make it easier...

Страница 86: ...Burn paper Clear plastic bags High density Styrofoam beam dump Photodiode with 1 ns rise time BNC cable 350 MHz oscilloscope with enhanced view screen This procedure optimizes the oscillator by monit...

Страница 87: ...free running can occur Misalignment If the polarization optics especially the 4 plate and the Pockels cell become misaligned then the polarization within the cavity becomes slightly undefined This me...

Страница 88: ...the FLASHLAMP SYNC BNC connectors located on front of the PCU to the external trigger input on the scope Set the time base to 100 s 4 Ensure that the PCU lamp voltage is set to the normal operating vo...

Страница 89: ...N Do not exceed 1 8 kV unless otherwise instructed to do so by a Continuum representative 17 Open the intracavity shutter and look at the oscilloscope to see if the laser is free running 18 If the las...

Страница 90: ...4 Increase the pump voltage by 20 V on the PCU by the pressing the SELECT button until red LED is lit next to VOLT AGE KV on the front panel of the PCU 5 Now use the ARROW UP ARROW DOWN buttons as nee...

Страница 91: ...n is present then the unit will have to be flushed 7 Drain the cooling group and refill with new distilled water 8 Remove the old DI filter and pinch off the DI filter water lines 9 Add 1 pint 500 ml...

Страница 92: ...Continuum Surelite Laser 82 996 0207...

Страница 93: ...Section 7 Physical Layout Figure 55 Surelite physical dimensions Surelite Optical Head 52 lbs 24 kg Surelite Power Supply 96 lbs 44 kg Surelite Separation Package SSP...

Страница 94: ...Continuum Surelite Laser 84 996 0207 This page is intentionally blank...

Страница 95: ...device identification markings have been removed defaced or altered or if any parts have been substituted or modified without the express consent of Continuum 3 The customer s general account at Conti...

Страница 96: ...ed or replaced free of charge in accordance with the terms of the Continuum warranty The warranty period on a repaired or replacement product shall be the balance of the warranty period remaining on t...

Страница 97: ...s PIV systems are designed for stability beam quality and variable pulse separation The PIV series has two main configurations Surelite I PIV Surelite II PIV Continuum mounts two Surelite lasers on a...

Страница 98: ...al can be remotely phase matched to optimize energy output using a control mounted external to the laser A self contained cooling system and independent power supplies for each resonator provide easy...

Страница 99: ...they now have circular polarization the doubling crystal 12 converts them equally to their second harmonic A pair of dichroics 13a and b now strips the unconverted 1064 nm light and steers the vertic...

Страница 100: ...damaging the crystal and to optimize and stabilize the doubled output A toggle switch on the PIV cover controls a motor driven oven rotation stage for easy optimization of the phase matching angle PIV...

Страница 101: ...paration see the 9 Beam alignment and Beam power balance sections below 10 Push the shutter buttons again to open both intracavity shutters then raise the PIV beam dump to begin PIV operation Shutdown...

Страница 102: ...al repetition rate and set laser B to single shot operation 4 Steer laser A beam to the PIV experiment with dichroics 13a and 13b 5 Place a white target e g a business card 5 to 500 cm after the PIV b...

Страница 103: ...itch using external control pulses Adjusting flashlamp voltage produces a similar result Flashlamp voltage The simplest way to change the YAG beam energy is to adjust the flashlamp discharge voltage o...

Страница 104: ...polarizer or a wave plate only clean the center of the optic If solvent reaches the edge of the optic it may dissolve mounting glue contaminating the optic Do not apply pressure during cleaning for th...

Страница 105: ...beams A and B 3 108 0001 Quarter wave plate Circularly polarizes both beams 13 105 0022 45 dichroics 2 Steer 532 nm output beams SHG Crystal Oven Parts 12 617 8000 Oven assembly Includes windows crys...

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Страница 107: ...Appendix B Operator Notes...

Страница 108: ...Continuum Surelite Laser 98 996 0207...

Страница 109: ...Appendix B Operator Notes 996 0207 99...

Страница 110: ...Continuum Surelite Laser 100 996 0207...

Страница 111: ...Appendix B Operator Notes 996 0207 101...

Страница 112: ...Continuum Surelite Laser 102 996 0207 This page is intentionally blank...

Страница 113: ...RS232 40 External interlock loop 60 F Flashlamp Voltage adjustment 79 Flashlamps 50 Replacement 50 66 Free running 77 G Government safety regulations 14 H Harmonic generators 55 Harmonics installing 3...

Страница 114: ...not defined Safety 88 Second harmonic generator 89 Shutdown 91 Specifications dimensions 95 Stability 88 Startup 90 2 pulses 1 laser 89 Q Quality Assurance Document Surelite I II III Error Bookmark no...

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