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Summary of Contents for SRS Labs Nitrogen Laser NL100
- Page 1 Operation and Service Manual NL100 Nitrogen Laser Stanford Research Systems Revision 1.6 (12/07/04)
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Page 2: Service
Certification Stanford Research Systems certifies that this product is in compliance with U.S. Code of Federal Regulations Title 21, Part 1040.10 and that it met its published specifications when shipped. Warranty This product is warranted against defects and materials for a period of one (1) year after shipment. -
Page 3: Safety And Preparation For Use
Safety and Preparation For Use Safety and Preparation For Use CAREFULLY READ THE SAFETY INFORMATION IN THIS SECTION BEFORE USING THE NL100 NITROGEN LASER. LASER SAFETY PAYS! The NL100 Nitrogen Laser is a Class IIIb that emits invisible ultraviolet (UV) radiation at 337.1 nm with sufficient intensity to be considered an acute hazard to human eyes and skin. -
Page 4: Safety Features And Warning Labels
Safety and Preparation For Use Safety Features and Warning Labels The NL100 laser system has been designed with the required safety features for compliance with 21 CFR 1040.10, which regulates laser products manufactured in the U.S.A. Protective housing 4. Emission indicator Beam shutter 5. - Page 5 Safety and Preparation For Use The warning labels that are attached to the NL100 or are painted onto the case are reproduced below. These warning labels are a requirement for compliance with 21 CFR 1040.10. Figure 3. Danger warning label, located on the front panel. Figure 4.
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Page 6: Vendors Of Laser Safety Eyewear
Safety and Preparation For Use Vendors of Laser Safety Eyewear Below is a partial list of vendors of laser safety eyewear. SRS does not endorse these vendors or their products over other available safety eyewear vendors and products, and provides this vendor list only for reference. Kentek Corporation 1 Elm Street Pittsfield, NH 03263... -
Page 7: Nl100 Nitrogen Laser Specifications
Specifications NL100 Nitrogen Laser Specifications Optical Laser wavelength 337.1 nm Optical bandwidth 0.1 nm Pulse repetition rate 1-20 Hz, internal trigger; 0-20 Hz external trigger Pulse width <3.5 ns (FWHM) 175 µJ Pulse energy Peak power 50 kW Average power 3.5 mW Beam size 3 x 7 mm... - Page 8 viii Specifications NL100 Nitrogen Laser...
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Page 9: Table Of Contents
Contents Contents Certification Warranty Service Safety and Preparation For Use Basic Safe Laser Practices Safety Features and Warning Labels Warning Labels Vendors of Laser Safety Eyewear NL100 Nitrogen Laser Specifications Contents Unpacking Checklist Standard Equipment and Supplies Optional Equipment Additional Necessary Equipment Operating Instructions Operating Controls Key Switch... - Page 10 Contents NL100 Nitrogen Laser...
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Page 11: Unpacking
Unpacking Unpacking WARNING! Read the safety information and these operating instructions carefully before operating this laser system. Checklist Open the box and inspect all components of the NL100 laser system. Report any damage to Stanford Research Systems immediately. Compare the contents of the shipping box against your original order and the checklist below. -
Page 12: Operating Instructions
Operation Operating Instructions WARNING! Read the safety information and these operating instructions carefully before operating this laser system. Operating Controls The operating controls for the laser system, with the exception of the beam shutter, are located on the back panel, as shown in Figure 7. Figure 7. -
Page 13: Power Input
Operation internal trigger (see RATE below) or from an external trigger. The key cannot be removed from the key switch when the switch is in the ON position. Power Input The NL100 requires 24V DC, 3A peak, 1.5 A average input power. Power may be applied through a Hypertronics #D01PB 306 MST plug connected to the Hypertronics receptacle located on the bottom right of the back panel. -
Page 14: Trigger In
Operation Trigger In When the RATE switch is in the OFF position (see RATE below), the NL100 is triggered by a TTL pulse at this BNC connector. The laser will fire the laser on the rising edge of the TTL pulse. The width required of the TTL pulse depends on whether the laser is being operated in COMMAND CHARGE or AUTO CHARGE mode. -
Page 15: Rate
Operation > > dwell dwell 45 ms 45 ms trigger pulse high voltage laser output time Figure 11. Timing diagram of COMMAND CHARGE mode. Note that time is not shown to scale and the diagram does not reflect triggering delays, etc. Where possible, we recommend using the NL100 in the COMMAND CHARGE mode. -
Page 16: Db-9 Connector
Operation NOTE: When the laser system is in INTERNAL RATE mode, it is also in AUTO CHARGE mode, regardless of the configuration of the DB-9 connector. When the laser is in INTERNAL RATE mode, trigger pulses applied at either the TRIG IN BNC or the EXT TRIG pin of the DB-9 connector have no effect on the operation of the laser. -
Page 17: Led Indicators
Operation Pin 6 and Pin 7:GND Ground and electrical power return. Pin 8: -Trigger Reference for opto-isolated external trigger pulse. Pin 9: -Interlock Return for Pin 1: +Interlock. LED Indicators Power LED This red LED is illuminated whenever the NL100 laser system is powered. A three- second delay circuit prevents the laser from firing when electrical power is first applied to the laser system to allow time for the laser beam path to be cleared. -
Page 18: Beam Shutter
Operation Beam Shutter The beam shutter is located at the front of the NL100 laser system, as shown in Figure 13 and Figure 14. Placing the beam shutter in the closed position mechanically blocks the beam aperture, preventing laser emission from exiting the laser housing. Figure 13. -
Page 19: High Voltage Adjust
Operation High Voltage Adjust The energy output of the NL100 laser system is roughly proportional to the high voltage charge. The high voltage can be changed by adjusting the ten-turn potentiometer that can be accessed through the hole labeled HV ADJUST located in the left side of the protective housing. -
Page 20: Maintenance And Service
Maintenance and Service Maintenance and Service Maintenance The NL100 laser system, with a sealed laser tube within a modular laser cartridge, is designed to be completely maintenance-free. Service The laser cartridge, which contains the laser tube and other high voltage components that are expected to degrade with use, can be replaced, thereby restoring the NLl00 laser system performance to that achieved when new. - Page 21 Maintenance and Service Figure 16. Remove the screws on the protective housing. WARNING! Never provide power to the NL100 laser or attempt to operate the NL100 laser with the protective cover removed! Doing so may expose the user to lethal voltages! 3.
- Page 22 Maintenance and Service 4. Disconnect the ground and monitor line connector, as shown. Figure 18. Disconnect the ground and monitor connector. 5. Remove the four 4-40 nuts that secure the laser cartridge to the bottom plate. Figure 19. Remove laser cartridge mounting nuts. 6.
- Page 23 Maintenance and Service 7. Replace with new cartridge. Secure to bottom plate with four 4-40 nuts. 8. Connect ground and monitor line connector plug to the power supply board, as shown. Figure 21. Reconnect ground and monitor line connector. 9. Identify the trigger and HV connector plugs. The trigger connector is the shorter of the two, and connects to the upper receptacle on the laser cartridge.
- Page 24 Maintenance and Service 10. Connect the trigger and HV plugs to the appropriate receptacle, as shown. Be sure to tighten the knurled nuts for each connector to the receptacle. Finger tight is sufficient. Figure 23. Connect the trigger and HV connector plugs to their respective receptacles. WARNING! Improper trigger and HV connections will result in the unit not operating, permanent damage to the unit, and expose the user to unsafe conditions.
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Page 25: Mechanical Drawings
Mechanical Drawings Mechanical Drawings NL100 Nitrogen Laser...
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