Related Manuals for Continuum Surelite I 10
Summary of Contents for Continuum Surelite I 10
- Page 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...
- Page 2 Continuum. Continuum reserves the right to make changes in specifications shown in this manual without notice or obligation. Contact your Continuum representative or Continuum Customer Service for the latest information.
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Page 3: Table Of Contents
Table of Contents Table of Contents ..................1 Table of Figures..................... 7 Preface ......................1 Préface......................3 Vorwort......................5 Section 1: Laser Safety Precautions ............7 Class IV Laser Safety Precautions ................. 7 General safety rules....................7 Optical Safety ......................8 Electrical Safety....................... - Page 4 Continuum Surelite Laser Daily Shutdown ..................... 28 Display readouts ....................28 Error messages....................... 29 Single shot (SS) button..................30 To enable SS.......................30 To disable Single Shot (SS) operation ..............30 Harmonics optimization ..................31 Second Harmonic Generation (SLD)...............32 Third Harmonic Generation (SLT) ................33 Fourth Harmonic Generation (SLF) ................34...
- Page 5 General description....................50 Rods ........................... 50 Flashlamps ......................... 50 Cooling........................50 Laser bench electronics ..................53 Active Q-switch......................53 Principle of operation ....................53 Harmonic generators .................... 55 Wavelength separation....................56 Power/Cooling Unit (PCU) ................. 58 Structure & organization ..................58 Front panel ........................
- Page 6 Limitation of remedy..................... 85 Disclaimer of implied warranty ................85 Returns, adjustments & 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...
- Page 7 Adjustable optics ....................... 91 Beam 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 Appendix B: Operator Notes ..............
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Page 9: Table Of Figures
Table of Figures ...... 13 IGURE OCATION OF LABELS ON THE URELITE OSCILLATOR ....13 IGURE OCATION OF LABELS ON URELITE EPARATION ACKAGE 811 L ............ 13 IGURE ABELS ON THE ASER ..........14 IGURE AFETY LABELS ON THE ASER SL I-20 H . - Page 10 Continuum Surelite Laser 50 R ....74 IGURE EAR MIRROR HORIZONTAL AND VERTICAL CONTROLS 55 S ..........83 IGURE URELITE PHYSICAL DIMENSIONS 56 PIV ..............89 IGURE OPTICAL LAYOUT 57 PIV ........90 IGURE OPTICAL HEAD PACKAGE DIMENSIONS 58 PIV ........
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Page 11: Table Of Contents
It is here that the more complicated procedures such as eliminating free-running are discussed. Section 8: Warranty details the Continuum warranty and gives Service telephone and FAX numbers for further help. The Operator Notes gives the user a convenient place to... - Page 12 Continuum Surelite Laser This page is intentionally blank. 996-0207...
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Page 13: Préface
Préface Les symboles de danger reconnus internationallement présentés ici sont utilisés tout au long du manuel pour avertir l’utilisateur des risques possibles lors de l’utilisation de ce laser. Le symbole de radiation sert à avertir l’utilisateur du danger d’exposition à la radiation laser lors de l’exécution de certaines opérations et lorsque ce danger est le plus grand. - Page 14 L’Annexe décrit la garantie Continuum et fournit les numéros de téléphone et de fax du service après-vente. Les Notes de l’Utilisateur offrent à l’utilisateur un endroit pratique pour conserver les rapports d’entretien et d’autres informations utiles.
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Page 15: Vorwort
Vorwort Die hier abgebildeten, international verständlichen Warnsymbole werden in der gesamten Anleitung dazu verwendet, den Benutzer auf mögliche Gefahrenquellen beim Laserbetrieb hinzuweisen. Das Strahlungssymbol warnt den Benutzer vor gefährlicher Laserstrahlung bei bestimmten Betriebsverfahren und bei den stärksten Strahlengefährdungen. Es wird auch für optische Gefahrenquellen verwendet. - Page 16 Continuum Surelite Laser Der Anhang enthält die Continuum-Garantie sowie Service-Rufnummern und - Faxnummern, unter denen weitere Hilfestellung verfügbar ist. Unter “Benutzernotizen” kann der Benutzer bequem Wartungsdaten und sonstige Informationen aufbewahren 996-0207...
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Page 17: Section 1: Laser Safety Precautions
• Continuum's Surelite lasers are class IV high power lasers whose beam is, by definition, a safety hazard. Take precautions to prevent accidental exposure to both direct and reflected beams. -
Page 18: Optical Safety
Continuum Surelite Laser • Keep all unnecessary personnel out of the work area. Remove all shiny reflective surfaces (including rings, watch bands, metal pencils etc.) and all flammable materials with their containers from the work area. • Operate lasers only in well-marked areas with controlled access. Be sure to post appropriate warning signs visible to all. -
Page 19: Electrical Safety
Section 1: Laser Safety Precautions • Mark the lab well with warning signs when the laser is operating and provide interlocks for all doors. Electrical Safety HIGH VOLTAGE! To prevent accidents from electrical shock, ensure that the capacitors are completely discharged and the power is turned off before performing any maintenance or repairs to the system. -
Page 20: Exit Shutter
Continuum Surelite Laser Exit shutter The Surelite has an exit beam shutter located outside its housing. Closing the beam shutter merely prevents the beam from exiting; it does not shut down the laser. The following safety labels are used throughout the Surelite laser. Refer to diagrams A &... - Page 21 Section 1: Laser Safety Precautions Item 5. 310-0023 Found on the cooling group side of the Power Control Unit. Item 6. 310-9124 Found on the interlock defeat. Item 7. 310-0022 Found on the power supply side of the Power Control Unit.
- Page 22 Continuum Surelite Laser 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. 996-0207...
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Page 23: Figure 1 Location Of Labels On The Surelite Oscillator
Section 1: Laser Safety Precautions 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 Head 996-0207... -
Page 24: Government And Industry Safety Regulations
Figure 4 Safety labels on the Laser Head Government and industry safety regulations Continuum’s user information is in compliance with section 1040.10 of 21 CFR Chapter I, Subchapter J concerning Radiological Health published by U.S. Department of Health & Human Services Center for Devices & Radiological Health, 1988. -
Page 25: References For Safety Regulations
Section 1: Laser Safety Precautions References for safety regulations Regulations of Administration & Enforcement of The Radiation Control for Health & Safety Act of 1968, U.S. Dept. 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. - Page 26 Continuum Surelite Laser 996-0207...
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Page 27: Section 2: Installation
Installation requirements The Surelite I & II laser systems are customer installed. The Surelite III & EX laser systems are installed by Continuum personnel. The sections below give detailed instructions regarding installation, tools necessary for installation and equipment required to monitor laser performance. Read the Installation section completely before beginning the installation. -
Page 28: Supplies
Continuum Surelite Laser Figure 5 Cooling group chassis assembly for SL I-20 Hz. Supplies You will need the following to install the Surelite: • Plug to fit your lab’s 200-240 V~ socket • Distilled water, 1.5 gallons (6 liters), 1 Μ/cm resistivity or better (water from a glass distiller will meet this requirement) •... -
Page 29: Unpacking Instructions
Unpacking Instructions Crate Inspection Check the crate for damage before unpacking the laser. If damaged, please notify both the freight company and Continuum before proceeding with the installation. Unpacking Please read through these instructions before attempting to unpack the Surelite. -
Page 30: Installation
Continuum Surelite Laser snugly into the groove below the Power Cooling Group (PCU). Arrows should point towards the inside of the crate. Lift the PCU head plug cable (with military plug) out of the crate and lay it on top of the PCU. - Page 31 • (1 ea.) Single Shot Cable that plugs into front of Power Cooling Unit (PCU) • (1 ea.) 250V~ 16A power cord. 2. Tilt the laser bench and use a ruler to check the length of the 4 legs that support the laser.
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Page 32: Flow Test The System
Flow test the system CAUTION! Before the first startup of the laser, be sure to review the entire manual, especially the section beginning on page 77 concerning elimination of free-running. 1. Plug the PCU into the 200-240 V~ power source. 2. - Page 33 Section 2: Installation Note: For thermal stabilization of Pockels cell and harmonic generators, the system software will not allow the SHUTTER 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.
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Page 34: Figure 11 Rear Panel Sl I-20 Pcu
Continuum Surelite Laser Figure 11 Rear panel SL I-20 PCU Figure 12 Front panel SL I-20 PCU Figure 13 Optical Surelite Separator Package (SSP) 996-0207... - Page 35 Section 2: Installation Table 1 Part numbers for the Surelite laser bench Ref. Name Surelite I Surelite II Surelite III Rear mirror 10 Hz 104-0003 104-0003 104-0002 Rear mirror 20 Hz 104-0049 104-0001 Pockels cell 202-0265 202-0265 202-0266 λ/4 plate 108-0001 108-0001 108-0001...
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Page 37: Section 3: System Operation
Section 3: System Operation Daily Startup 1. Check the water reservoir level before beginning Startup for the first time. The toggle switch labeled, AC Power, should have been left on after the last use. If not, do the following: • On the front panel of the Surelite power unit, flip the toggle switch up that is labeled AC P (this is the On position). -
Page 38: Daily Shutdown
Continuum Surelite Laser Note: During the first 20 minutes after the red AC Power toggle is turned on, the software will not allow the SHUTTER to open. This enables thermal stabilization of the Pockels cell and harmonic generators. 9. If harmonic crystals are used, allow laser output to pass through crystals for 5 minutes and then optimize the crystals for maximum energy. -
Page 39: Error Messages
Section 3: System Operation XXX Q-switch delay setting in microseconds. Red light labeled Q-SW DELAY µs next to LED display should also be on. This value indicates the time between the command to fire the flashlamp and the command to fire the Pockels cell. The normal value is listed in the QA in front of the manual. -
Page 40: Single Shot (Ss) Button
QA values for frequency (Fxx), lamp pump voltage, Q- switch delay and pulse division (P01). If display does not go away after recycling keyswitch, contact Continuum. Single shot (SS) button An operational feature of your Surelite is the ability to operate the system in a single shot mode. -
Page 41: Harmonics Optimization
If there is no laser output press SELECT button 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 are as follows: • SLD Surelite doubler • SLT Surelite third harmonic •... -
Page 42: Second Harmonic Generation (Sld)
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 (SSP). 4. Position the SSP as indicated in drawing Figure 13 on page 24. -
Page 43: Third Harmonic Generation (Slt)
SLD-2 will lower 355 nm energy by >25%. 4. Locate the third harmonic crystal model SLT and install. See procedure on 37. 5. Install 355 nm dichroics in Continuum’s optional Surelite Separation Package (SSP). 6. Position the SSP as indicated in Figure 13 on page 24. -
Page 44: Fourth Harmonic Generation (Slf)
SLD-1 will lower 266 nm energy by >25%. 4. Locate the fourth harmonic crystal model SLF and install. See procedure on page 37. 5. Install 266 nm dichroics in Continuum’s optional Surelite Separation Package (SSP). 6. Position the SSP as indicated in Figure 13 on page 24. -
Page 45: Figure 15 Ssp 1,2,3,4 Optical Layout (Top View With Cover Off)
Section 3: System Operation 10. Position the SSP so that the 266 nm and the 532 nm/1,064 nm fall cleanly on their respective mirror surfaces with no clipping. See diagram on page 35. 11. Steer the 266 nm separated from the 532 nm/1,064 nm into a volume absorbing power meter set on the 1 Watt scale. -
Page 46: Installation & Removal Of Harmonic Generators
Continuum Surelite Laser Figure 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 SLD... -
Page 47: Installation Of Slt Or Slf
Section 3: System Operation • Second harmonic generator (SLD-1 or SLD-2) • (3 ea.) 35 mm long M3 Allen bolts • Phillips #2 screwdriver TEPS 1. Shut the system down by performing Daily Shutdown Procedure. See page 28. 2. Remove laser housing cover that is held in place by the 2 Phillips head screws at each end. -
Page 48: Removal
Continuum Surelite Laser Note: For Surelite III Secure harmonic generator housing to the support bracket on the graphite structure with an M4x10 mm bolt, flat washer and lock washer. 7. Remove the cover plate for the SLT or SLF adjustment knob. -
Page 49: Figure 20 Top View Of Heater Connectors
Section 3: System Operation 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 output face 996-0207... -
Page 50: Rs232 Serial Port
Continuum Surelite Laser RS232 serial port For customers who wish to control the laser from their own computer, Continuum has provided two methods of external control; through an RS232 interface or with Direct Access Triggering (DAT). With RS232 operation, ASCII commands are transmitted via the RS232 interface. The RS232 is used with an IBM PC compatible or a Macintosh as long as the host computer incorporates an RS232 control format. - Page 51 Section 3: System Operation 3. Plug the Surelite into ac supply and toggle 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 enabled. 7.
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Page 52: Control Commands
Control commands The RS232 communication parameters are: 9600 BAUD, 8 BIT, NO PARITY, 1 STOP BIT (8N1) Table 5 Functions and RS232 Commands Function RS232 Command Single Shot PD must be in 000 mode Security Read only Shutter [0/1] (off/on) Start/Stop [0/1] (off/on) Q-switch delay... -
Page 53: To Disable Rs232
Section 3: System Operation Table 6 ASCI response Returns Description Normal return Surelite not in serial mode Coolant flow interrupted Coolant temperature over temp (not used) Laser head problem External interlock End of charge not detected before lamp fire Simmer not detected Flow switch stuck on. -
Page 54: To Enable Dat
Continuum Surelite Laser • Solder the center conductor of the Q-SWITCH BNC to pin 6 of the 9 pin D connector. • Solder the shield of the Q-SWITCH BNC to pin 3 of the 9 pin D connector. 2. Program the DG535 as follows: •... -
Page 55: Dat Mode 1 (± 10 Ns Jitter)
Section 3: System Operation • 9 pin D style male connector • Shielded cable (suggest RG-174 coaxial cable) DAT Mode 1 (± 10 ns jitter) In this mode the operator can fire the laser by providing a single negative going pulse (5 V .0 V). Jitter time of the laser output with respect to the input fire command will be ±10 ns. -
Page 56: To Disable Dat
Continuum Surelite Laser 3. Plug D connector made in step 2 to the EXTERNAL connector on front panel of the PCU. 4. Plug the Surelite into ac supply and toggle on the AC POWER.. 5. Turn the keyswitch to the ON position. -
Page 57: Figure 27 Surelite Chronograph
Section 3: System Operation Figure 27 Surelite chronograph 996-0207... -
Page 58: Override Of Shutter Lockout
Continuum Surelite Laser Override of shutter lockout For reliable operation and spec. performance of the Surelite laser, key components on the laser system are thermally stabilized. To ensure that thermal stabilization has been reached at initial startup, there is a 20 minute period after ac power is first applied before the SHUTTER button can be toggled open. -
Page 59: Section 4: Subassembly And Module Descriptions
Section 4: Subassembly and Module Descriptions Laser bench optics Optical layout Figure 28 shows the optics positioned on the laser bench. Table 8 provides many of the part numbers. Figure 28 Overview of Surelite laser bench Table 8 Part numbers for Surelite laser bench Ref. -
Page 60: Laser Heads
Laser heads General description Continuum’s Surelite lasers use the 811U-06 head for the Surelite I, the 811U-07 head for the Surelite II models, and a 821V-09 head for the Surelite III model. They all have a beam height of 43 mm. The head is a modular design incorporating a rod, a flashlamp and coupling medium. It has a linear flashlamp which is in a close coupled configuration surrounded by a high brilliance magnesium oxide diffuser. -
Page 61: Figure 29 811U-06 Laser Head With One Flashlamp
Section 4: Subassembly and Module Descriptions Table 9 Part numbers for Surelite laser heads (single flashlamp) Name Surelite I Surelite II Surelite III 811U-06 head (upper) 507-0700 201-0056 Flashlamp 203-0019 “O” ring kit 507-0710 811U-07 head (upper) 507-1000 201-0004 Flashlamp 203-0019 “O”... -
Page 62: Figure 31 812V-09 Laser Head With Two Flashlamps
Continuum Surelite Laser Table 10 Part numbers for Surelite laser heads (two flashlamps) Name Surelite I Surelite II Surelite III 812V-09 head (vertical) 507-0900 201-0005 2 Flashlamps 203-0032 “O” ring kit 507-0905 Figure 31 812V-09 laser head with two flashlamps... -
Page 63: Laser Bench Electronics
Section 4: Subassembly and Module Descriptions Laser bench electronics Active Q-switch The combination of a polarizer, Pockels cell and λ/4 plate within the oscillator is known as a Q- switch. A Q-switch prevents lasing in the resonator until the laser gain reaches its peak and then opens the cavity to allow oscillation. -
Page 64: Figure 33 Cavity Closed With No Lasing
Continuum Surelite Laser Figure 33 Cavity closed with no lasing UARTER WAVE PLATE The plate used introduces a quarter wave rotation to photons at 1,064 nm as they pass in either direction through the plate. The plate has a clear aperture of 15 mm and is mounted at a beam height of 43 mm. -
Page 65: Harmonic Generators
Section 4: Subassembly and Module Descriptions AVITY OPEN The beam propagating within the oscillator cavity makes a double pass through the Pockels cell and λ/4 plate. At 3600 volts on the PC it adds 45° rotation and the λ/4 plate adds 45° with each pass, giving a total rotation of 180°. Thus, the horizontal beam that transmitted through the plate polarizer is rotated to vertical and back to horizontal, so that it is transmitted by the polarizer allowing oscillation to occur. -
Page 66: Wavelength Separation
Continuum Surelite Laser Wavelength separation In most cases, only one wavelength is wanted at a time, and some means of separating the various wavelengths emerging from the harmonics is needed. This is the role of the Surelite Separation Packages (SSP-1, 2 & 3). Each is a set of dichroic mirrors, which isolates the desired wavelength and steers the beam toward the appropriate output port. -
Page 67: Figure 39 Ssp 1,2,3,4 Optical Layout (Top View With Cover Off)
Section 4: Subassembly and Module Descriptions 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) 996-0207... -
Page 68: Power/Cooling Unit (Pcu)
Continuum Surelite Laser Figure 41 Surelite I 20 Hz rear and front panels Power/Cooling Unit (PCU) The PCU unit generates the following: • control of the system with the necessary power-up time delays, clock rep rate signals, charge/fire commands and Q-switch delays. -
Page 69: Rear Panel
Section 4: Subassembly and Module Descriptions LASER ON LED. This red LED comes on when water flow is established. KEY SWITCH. Turning the key from off to ON position resets system logic and enables power-up sequence to begin. START/STOP. This button switch starts and stops the laser head flashlamp. SHUTTER BUTTON. -
Page 70: External Interlock Loop
Continuum Surelite Laser LASER HEAD. 9-pin D-style connector that runs between PCU and laser bench. The cable carries 24 VDC and "fire" pulses for Q-switch and laser bench security loop. FLASHLAMP. Large black triaxial cable that carries the high voltage and high current from the PCU to the flashlamp on the laser bench. -
Page 71: Security Installation
Section 4: Subassembly and Module Descriptions Security installation Lab Door. Mount a Single Pole Single Throw (SPST) switch above the door so that when the door is open the switch is open and when the door is closed the switch is closed. Also install a momentary switch in parallel with the SPST switch so that if you wish to open the door... -
Page 72: Cooling Group, Cg
Continuum Surelite Laser Figure 43 Power supply chassis assembly 624-4100 Power control PCB Cooling Group, CG General description The cooling group half of the unit provides a temperature stabilized circulating loop of distilled water to the laser head, cooling the laser rod and flashlamp by water/air forced convection. It contains a distilled water reservoir, a magnetically coupled pump, a deionizing filter cartridge and a finned tube radiator heat exchanger with a cooling fan (two fans for a 20 Hz laser). -
Page 73: 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 filter should be changed every three to six months (along with the distilled water) as a routine maintenance procedure. Distilled water may be added to the distilled water bottle filling it to within 1 inch (~2cm) from the top (with the cooling lines empty). -
Page 74: Figure 45 Cooling Group Chassis Assembly For Surelitei 20 H Z
Continuum Surelite Laser Figure 45 Cooling group chassis assembly for Surelite I 20 Hz 996-0207... -
Page 75: Section 5: Maintenance
Section 5: Maintenance Table 11 System maintenance schedule Each Every Every month 6 months 12 months Check system alignment. See Troubleshooting. Clean/inspect optics. See page 5-1. Change DI filter in cooling unit. See page 5-3. Replace flashlamps. See page 5-2. Clean CG radiator. -
Page 76: Mounted Optics And Rods
Continuum Surelite Laser Mounted optics and rods 1. Wrap lens tissue on a cotton tipped applicator. 2. Apply a few drops of methanol directly on lens tissue and shake off excess. 3. Swab optic gently with the applicator starting at the center and working towards the edge. -
Page 77: Replacing Di Filter
Section 5: Maintenance 11. With a cotton swab wet each end of the exposed flashlamp electrode with water, and then using a gentle twisting motion, remove the white plastic lamp retainers. 12. Pull firmly on either flashlamp electrode and push on the other to remove the lamp. 13. - Page 78 Continuum Surelite Laser • 6" adjustable wrench • Roll of teflon tape TEPS 1. Look for this label on the cooling group side of the unit. Do not open the power unit side. The cooling group cannot be accessed from Open this side the power unit side.
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Page 79: Figure 47 Cooling Group Chassis Without Fans On The Front Panel
Section 5: Maintenance Figure 47 Cooling group chassis without fans on the front panel Figure 48 Cooling group chassis assembly for Surelite I 20 Hz 996-0207... - Page 80 Continuum Surelite Laser This page is intentionally blank. 996-0207...
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Page 81: Section 6: Troubleshooting
Section 6: Troubleshooting Electrical Troubleshooting Table 12 Electrical troubleshooting Problem Action LED display readout will not Check lab ac power source. come on Reset the MAIN ac breaker on the front panel of PCU. Verify connection of the INPUT 220 VAC power cord. Turn key switch off and then on. - Page 82 CSE error message Refers to “check sum error" in the EEPROM. displayed Reenter QA values listed in the front of the manual (see page 3-4). Contact Continuum if display does not go away. 996-0207...
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Page 83: Oscillator Alignment Optimization
Low IR Energy or Poor Beam Check oscillator alignment. page 73 Quality Check for damaged optics. Make a list of damaged optics & contact Continuum. Replace the flashlamp. page 66 Low Harmonics Energy or Check for damaged harmonic Make a list of damaged optics Poor Beam Quality crystals or optics. -
Page 84: Burn Paper Alignment
Continuum Surelite Laser 4. Position power meter ~3" (7.6 cm) from the exit port so that it will intercept the laser beam. 5. Locate and identify the horizontal and vertical adjust knobs at the rear of the oscillator. (See Figure 50.) Observe how a 2 mm Allen key will fit in the slots and allow adjustment of these controls. - Page 85 10. Repeat previous steps until the light brown circle is centered. Note: If after following this procedure the output beam does not look similar to the initial installation burn patterns, then a more complex realignment may be required. Contact Continuum Service Department for information. 996-0207...
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Page 86: Oscillator Optimization (With An Oscilloscope)
Continuum Surelite Laser CAUTION! Never attempt to adjust the output coupler (the mirror mount nearest to the exit port). 11. Once normal power has been restored, shut down the system, remove the interlock defeat bracket and reinstall oscillator housing cover. -
Page 87: Eliminating Free-Running
Section 6: Troubleshooting 4. Activate P01 and press SHUTTER button. 5. While viewing the pulsewidth on the scope adjust the vertical position of the back mirror M#1. Make very small adjustments at first to be able to determine effect of the adjustment. - Page 88 Continuum Surelite Laser CAUTION! The following adjustments should be made with the Q-switch off (using the SELECT button on front of PCU, toggle to pulse division and set value to P00), the lamps flashing and the cavity shutter open. ECESSARY QUIPMENT oscilloscope with 1 Μ...
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Page 89: Flashlamp Voltage Adjustment
16. Close the intracavity shutter and increase the pump voltage by 100 V. CAUTION! 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. -
Page 90: Cooling Group Contamination
Continuum Surelite Laser affect beam quality. This procedure instructs you on how to increase flashlamp pump voltage to compensate for lamp aging. ECESSARY QUIPMENT • power meter • IR card TEPS 1. Before increasing the pump voltage to bring the laser output back to spec energy, make sure that your power decrease is not due to misalignment or optical damage. - Page 91 Section 6: Troubleshooting TEPS 1. Look for this label on the cooling group side of the unit. DO NOT open the power unit side. The cooling Open this side group cannot be accessed from the power unit side. for cooling group maintenance.
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Page 93: Section 7: Physical Layout
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) - Page 94 Continuum Surelite Laser This page is intentionally blank. 996-0207...
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Page 95: Section 8: Warranty
Merchantability or fitness or any other remedies available other than as expressed herein. Returns, adjustments & servicing If warranty or general repair or service to a Continuum product is requested by the customer involving the product’s return to Continuum, the terms of the return shall include the following: 1. - Page 96 Buyer and all risk of loss, damage or delay in shipment shall be borne solely by the Buyer. 4. After receipt of product, Continuum reserves the right to inspect the product and to determine the cause of failure and warranty status. Continuum shall have no duty to...
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Page 97: Appendix A: Piv Operation And Maintenance
• Surelite I PIV • Surelite II PIV Continuum mounts two Surelite lasers on a stable and compact laser bench. Optics on the same bench combine a pulse from each laser to pass through a single, temperature stabilized KDP frequency doubling crystal. The result is two 532 nm pulses with nearly identical energy, beam uniformity and polarization. -
Page 98: Beam Quality
Continuum Surelite Laser Beam Quality PIV requires that the dual pulses have the same spatial overlap, energy and symmetry. Each dual pulse laser system leaves the factory matched in energy and beam quality. Extensive long-term stability testing ensures that performance remains optimized. -
Page 99: Piv Optical Description
Appendix A: PIV Operation and Maintenance PIV Optical description Figure 56 shows the PIV optical layout. Two 1064 nm fundamental Nd:YAG laser beams are first combined on a common optical axis and passed through a single doubling crystal. 532 nm dichroic separation optics then provide two green output pulses. The beam from laser A defines this common optical axis. -
Page 100: Piv Physical Layout
Continuum Surelite Laser the non-linear crystal, there is a particular angle (the phase matched angle), at which the crystal’s birefringence gives the combined photon, with both different frequency and polarization, the same velocity as the input photons. The doubling crystal is enclosed in an oven kept at a constant temperature of 35° C, to prevent water vapor from damaging the crystal and to optimize and stabilize the doubled output. -
Page 101: Shutdown
Appendix A: PIV Operation and Maintenance WARNING! Be sure to wear goggles and observe all safety procedures. 3. Also allow any external pulse timing control circuitry to warm up. 4. Open the 1,064 nm output shutter of each laser. 5. After waiting at least 20 minutes, you may wish to tune the PIV doubling crystal. Use the SHG toggle switch mounted on the laser bench to change the crystal angle. -
Page 102: Beam Alignment
Continuum Surelite Laser Beam alignment Beam alignment involves adjusting steering optics (10a), (10b), (13a) and (13b) only. Adjust neither the wave plates (9) and (3) nor the dielectric polarizer (11), nor the position of the crystal oven (12). Perform this procedure only if misalignment is obvious. -
Page 103: Crystal Phase Matching
Appendix A: PIV Operation and Maintenance Crystal phase matching Phase matching the doubling crystal is occasionally necessary to maintain maximum energy of the doubled pulses. A toggle switch, mounted on the side of the laser bench, controls a motor which rotates the crystal while the PIV cover remains closed. To phase match the crystal do the following: 1. -
Page 104: Maintaining Piv Optics
The SHG (doubling) crystal is mounted in a sealed oven, and damage to a crystal face can be seen through the oven window. Continuum recommends that the entire oven assembly be exchanged when the inside of a window or a crystal face shows damage. -
Page 105: Piv Specifications
Appendix A: PIV Operation and Maintenance PIV Specifications Table 14 PIV part numbers Figure 56 Description Optics 108-0004 Half wave plate Horizontally polarizes beam B 105-0086 1064 nm mirror Steers beam B 105-0002 Steers beam B 1064 45° mirror 199-0055 Dielectric polarizer Combines beams A and B 108-0001... - Page 106 Continuum Surelite Laser This page is intentionally blank. 996-0207...
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Page 107: Appendix B: Operator Notes
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Page 113: Index
Index Government safety regulations 14 Alignment Oscillator optimization 73 Harmonic generators 55 Burn paper alignment 74 Harmonics installing 36 removal 38 Harmonics optimization 31 Chronograph 47 Doubling specs table 32 Cooling Group Quadrupling specs table 34 Contamination 80 Tripling specs table 33 General description 62 Heads Maintenance 63... - Page 114 Continuum Surelite Laser Removal of harmonic generators 38 Returns and servicing 85 no entries Rods 50 RS232 To disable 40 To enable 43 Optical layout part numbers 25 Optical Troubleshooting Table 73 Safety 7 Optimization 73 Electrical 9 Oscillator optimization 76...
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