Related Manuals for NORTHROP GRUMMAN Patara I
Summary of Contents for NORTHROP GRUMMAN Patara I
- Page 1 User Manual Patara Laser Model PA-020-QTGP Gen I and II JANUARY 2018 CEO-UMAN-0092 Rev A...
- Page 2 *After office hours, please leave a voice mail message. Outside North America, contact a Cutting Edge Optronics sales office or distributor; see the Cutting Edge Optronics website for a list of offices. © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual...
- Page 3 Cutting Edge Optronics. Patara I and II Patents Northrop Grumman Corporation products are covered by U.S. and foreign patents, issued and pending. Information in this publication supersedes that in all previously published material. Specifications and price change privileges reserved.
- Page 4 Safety Information Product End-of-Life Handling Northrop Grumman is committed to protecting the environment. In accordance with the Waste Electrical and Electronic Equipment directive (WEEE) and Restriction of Hazardous Substances in the European Union (RoHS EU) directives, Northrop Grumman accepts the return of its products for disposal.
- Page 5 An injury hazard immediately accessible as the marking is read. DANGER A hazard not immediately accessible as the marking is read. WARNING A hazard to property including the product. CAUTION ESD: Handle Appropriately © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual...
- Page 6 Laser Emission: Use caution. Shock Hazard: Use caution. Caution: Risk of danger. Refer to manual. Chassis Ground © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual...
- Page 7 The trouble shooting section is intended to help guide the user to the source of problems. Do not attempt repairs while the unit is under warranty; instead, report all problems to Northrop Grumman for warranty repair. Use the form in Appendix A: Customer Service to describe issues with the laser.
- Page 8 Appendix C: Acronyms provides a list of commonly used abbreviations and their descriptions used throughout this manual. Index provides page references for subjects within the manual. © 2018 Cutting Edge Optronics, Inc. viii Patara I and II Laser User Manual...
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Page 9: Table Of Contents
Laser Head Setup eDrive Setup Chiller Setup Connecting the Chiller Connections to the Laser Head PolyScience 6000 Power-Up Procedure First Time Laser Power-Up Procedure Daily Operation Output Power Control © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... - Page 10 Chapter 7: Troubleshooting Initial Checklist Laser Output Power Laser Beam Quality eDrive Operation Appendix A: Customer Service Questions Appendix B: System International Units Appendix C: Acronyms Index © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual...
- Page 11 Figure 4-5. Connectors on the Rear Panel of the Patara Laser ..........28 Figure 4-6. Plumbing Connection .................... 28 Figure 4-7. RF Connection ...................... 29 Figure 4-8. Diode Power Connection ..................29 Figure 4-9. Signal Connection ....................30 © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual...
- Page 12 Figure 5-4. Example of Power Dependence and Pulse-to-Pulse ..........45 Figure 5-5. Example of Laser Performance Dependence on the Operating Current ....46 Figure 5-6. Accessible Holes for HR and HM Cavity Mirror Adjustment ........47 © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual...
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Page 13: Chapter 1: Introduction
Chapter 1: Introduction This introduction provides the following information: Theory of operation System description © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... -
Page 14: Theory Of Operation
With the doubling crystal mounted in a cell on the top of the thermal electric cooler (TEC), the temperature of the doubling crystal can be controlled. The performance parameters are optimized with a crystal temperature between 20 ºC © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... - Page 15 This is particularly important to the intensity of amplifier excitation, pump power, or drive current © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual...
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Page 16: System Description
Figure 1-1. System Block Diagram NOTE: Figure 1-1 shows an external TEC Controller, which is not standard. Typically the TEC Controller is located inside the eDrive (for -0150 and later configurations). © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... -
Page 17: Table 1-1 Typical Performance Of The Patara Laser
Drain the chiller, and replace the coolant and filter monthly. This may be required more often if the system shows signs of contamination. © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... - Page 18 Chapter One: Introduction Optics Subsystem The optical subsystem consists of an optical assembly on a Northrop Grumman industrial laser optics bench. Electronic Subsystem The electronic subsystem consists of a 4U sized eDrive with an internal TEC controller (see eDrive User Manual [CEO-UMAN-0001] for details). Refer to Chapter 4: Installation and Operation to setup and operate the eDrive with the Patara laser.
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Page 19: Chapter 2: Laser Safety
Chapter 2: Laser Safety Please read this chapter carefully before installing or operating the laser. A Northrop Grumman trained service engineer should perform all service and repair operations. If planning to service the laser, please follow the procedures in Chapter 5: Maintenance. -
Page 20: Safety Overview
Post warning signs in prominent locations near the laser operation area. Use safety interlocks on all entryways. All Northrop Grumman system control electronics are supplied with interlock inputs that can be used to preclude operation with an open safety door. -
Page 21: Center For Devices And Radiological Health Compliance
(e.g. fire, flood, mechanical shock, spilled solvent), verify that the radiation controls are functioning properly (see Figure 2-1). All warning labels should remain fully attached. © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... -
Page 22: Figure 2-1. Radiation Labels And Location
Chapter 2: Laser Safety Figure 2-1. Radiation Labels and Location © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... -
Page 23: Chapter 3: System Details
Chapter 3: System Details This chapter discusses the operation of the Patara laser: Patara laser Closed loop chiller eDrive Nitro © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... -
Page 24: Patara Laser
The alignment openings are located on both front and back panels and are sealed by screws to prevent emission during normal operation. The service technician can remove the screws and use a HeNe laser to aid alignment. © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... -
Page 25: Closed Loop Chiller
More than one third of these damaged lasers result from cooling problems. Coolant problems almost always require the replacement of the diode arrays—the single most expensive component in Northrop Grumman lasers. This section describes how to avoid damaging arrays. -
Page 26: Table 3-2. Cooling System Requirements
The Patara laser has exposed bare copper inside the coolant loop. For this reason, Northrop Grumman does not recommend using untreated deionized (DI) water. If DI water is used as the coolant, it is important to maintain the water resistivity between 300 and 700 K ohms and to keep the water slightly basic (i.e., keep the water above 8.0 pH). - Page 27 Grumman drive electronics are equipped with a coolant interlock. This interlock interrupts drive current to the diodes when coolant flow rate drops below a set point. When setting up the laser system for the first time, Northrop Grumman recommends testing the flow interlock before firing. Turn the eDrive on without current applied to the laser, and then turn the chiller off.
- Page 28 WARNING. Do not operate the laser without a functional desiccant cartridge. Condensation on the diode arrays can seriously damage the laser and may void warranty. © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual...
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Page 29: Figure 3-4. Constant Dew Point Lines For Ambient Temp And Relative Humidity
Chapter 3: System Details Figure 3-4. Constant Dew Point Lines for Ambient Temp and Relative Humidity © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... -
Page 30: Table 3-4. Air Condensation Temp
The laser should be operated inside an area that is purged with nitrogen (N ) or encased in a sealed enclosure with desiccant. © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... -
Page 31: Edrive Nitro
Additional information about the eDrive Nitro can be found in the eDrive User Manual (CEO-UMAN-0001). Figure 3-5. eDrive Nitro Control Panel © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... -
Page 32: Chapter 4: Installation And Operation
External triggering and FPS The purchaser is responsible for any loss and injury during installation and use of the laser system. Northrop Grumman recommends that a qualified service technician install and maintain the laser. If intending to service the laser personally, please follow the following procedures. -
Page 33: Laser System Components
Laser Signal Cable Diode Power Cable Q-Switch RF Cable AC Power Cables Hose for Chiller Filter housing and Filter Filter Wrench Figure 4-1. Components for the Patara Laser © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... -
Page 34: Unpacking The Laser System
Chapter Four: Installation and Operation Unpacking the Laser System The Northrop Grumman Patara laser has been carefully packed for shipment. If the carton appears to have been damaged in transit, have the shipper’s agent present when the unit is unpacked. -
Page 35: Laser Head Setup
A pulse detector should be positioned as shown in Figure 4-2 to verify the pulse characteristics of the laser. Figure 4-2. Basic setup for the laser power test © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... -
Page 36: Edrive Setup
The front and rear vents of the eDrive must be a minimum of 24 inches (61 cm) away from walls or vertical surfaces so air flow is not restricted. © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... -
Page 37: Chiller Setup
Ensure that the power outlet used for the chiller is properly grounded and matches the voltage and frequency indicated on the label on the back of the chiller. © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... -
Page 38: Connecting The Chiller
Please follow the proper procedures to clean the chiller before it is connected to the laser head. These procedures are listed on the CD (compact disc) shipped with the unit. They are also available through Northrop Grumman customer service. WARNING. -
Page 39: Connections To The Laser Head
Figure 4-4. Chiller Assembled with Water Hoses and Filter Connections to the Laser Head Figure 4-5 depicts the connectors on the rear panel of the Patara Laser. All of the connectors are clearly labeled. © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... -
Page 40: Figure 4-5. Connectors On The Rear Panel Of The Patara Laser
(see Figure 4-7). Once it is aligned, the connector can be pushed in. Turn the locking ring of the connector in the clockwise direction until it is locked. © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... -
Page 41: Figure 4-7. Rf Connection
J1 connector on the laser head. Once it is aligned, the connector can be pushed in. Turn the locking ring of the connector in the clockwise direction until it is locked as shown in Figure 4-9. © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... -
Page 42: Figure 4-9. Signal Connection
Figure 4-10. Rear Panel of the eDrive 1. Connect RF cable. Connect the QS RF cable to the RF OUT 1 connector as shown in Figure 4-11. © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... -
Page 43: Figure 4-11. Rf Connection
(see Figure 4-13). Once it is aligned, the connector can be pushed in. Turn the locking ring of the connector in the clockwise direction until it is locked. © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... -
Page 44: Polyscience 6000 Power-Up Procedure
Place the Circuit Breaker/Power Switch on the rear of the instrument enclosure to the On position. Three decimal points appear on the temperature display; two decimal points appear on the pressure/flow rate display. © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... -
Page 45: First Time Laser Power-Up Procedure
WARNING. Do not operate coolant system below air condensation temperature (dew point) at the laser head. Condensation on the diode arrays can seriously damage the laser head. © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... - Page 46 5 A/S Slew Control Enabled Set Current Limit 30 A Set Voltage Dropout 20 V Channel Setup Channel 1 Fault Setup Set Current Tolerance Enabled Set Current Tolerance © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual...
- Page 47 6. Press the SHUTTER button to open the laser shutter. Gradually increase the current until the laser is firing at very low power. Move the negative lens and © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual...
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Page 48: Daily Operation
1. Press SHUTTER button on the eDrive front panel. The EMISSION and LASER ON indicators will begin to blink. The laser diode current will default to standby current level while the shutter is closed. © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... -
Page 49: Output Power Control
The focal point is kept at the same position regardless of the power level. This feature is very useful for precision micro-machining requiring different power levels to complete the process. © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... -
Page 50: External Triggering And Fps
Configuring the Integrated AO Q-Switch RF Driver section in Chapter 3: Operating Basics in the eDrive User Manual (CEO-UMAN-0001). To set the FPS properly, use a photodiode detect with response time 1 ns and an oscilloscope. © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... -
Page 51: Chapter 5: Maintenance
Prepare for shipment Purge housing Replace desiccant cartridge Maintain chiller Check hold off Extend lifetime of laser diodes Optimize laser performance © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... -
Page 52: Required Tools And Consumable Items List
After shipment, if antifreeze was used, drain and clean the chiller. Add a new filter and clean Optishield Plus coolant before reconnecting the chiller to the laser. © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... -
Page 53: Purge Housing
Also, the housing interior can be purged with clean, dry air using the valve on the rear of the housing. The inlet line is the stemmed valve and is opened and closed by rotating the knob on the valve end. Please contact Northrop Grumman before attempting this procedure. -
Page 54: Figure 5-1. Desiccant Cartridge
Tighten with a quarter turn of a wrench to form a good seal. The desiccant cartridge used in the Patara laser head is an industry standard part (part number 42-228). © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... -
Page 55: Maintain Chiller
Chapter Five: Maintenance Desiccant supplies can be purchased from Northrop Grumman, or directly from AGM Container Controls, Inc., telephone number 800-995-5590. Desiccant cartridge NG CEO part no. 42-228 Refill part number 643665 Refill tool 980412 No cartridge installation tool is needed. The 40 gram desiccant cartridge is hand tightened. -
Page 56: Extend Lifetime Of Laser Diodes
Once the maximum current of 30 A is reached, consider replacing diodes or upgrade the laser. Please contact Northrop Grumman for detailed information. -
Page 57: Figure 5-4. Example Of Power Dependence And Pulse-To-Pulse
23 A. Search for the peak power by changing the current 0.1 A increments around the operating current. Once the peak power is found, lower the © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... -
Page 58: Figure 5-5. Example Of Laser Performance Dependence On The Operating Current
The screws for the adjustments of the vertical tilt angle and the horizontal tilt angle are illustrated in Figure 5-6. © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... -
Page 59: Figure 5-6. Accessible Holes For Hr And Hm Cavity Mirror Adjustment
SHG crystal temperature adjustments. Reduce current by 2 A while making coarse adjustments. Return current to normal when making fine adjustments. © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... - Page 60 If laser power is within +/-5 percent of nominal (typical power meter accuracy), and it has good beam shape and stability, stop and replace the access screws in the cover. © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual...
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Page 61: Chapter 6: Customer Service
This chapter provides reference to types of customer service needs: Contacting customer service Module replacement Return the instrument for repair © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... -
Page 62: Contacting Customer Service
Complete the questionnaire with as much detail as possible and retain a copy for the records. E-mail or fax the form to Northrop Grumman (refer to the second page of this manual for contact information) and notify the customer service representative that it has been sent. -
Page 63: Chapter 7: Troubleshooting
WARNING . Do not attempt repairs while the unit is under warranty. Complete the form in Appendix A and report problems to Northrop Grumman for repair. The following sections can be found in this chapter: Initial checklist Laser output power ... -
Page 64: Initial Checklist
Laser is running in CW mode or problem with hold off: Check the hold off of the laser, ensure the Q-switch is enabled, and the eDrive’s RF driver is functioning properly. © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... -
Page 65: Laser Beam Quality
Optimize Laser Performance section in Chapter 5: Maintenance to bring the power back. Internal optical damage to the laser, contaminated rod, or aging diodes: If the laser power cannot be restored after optimization, contact Northrop Grumman for service. No Output Power ... - Page 66 Verify laser output window and all external optics are clean and free of damage. If no damage is found, move the © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual...
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Page 67: Edrive Operation
Check INTERLOCK input on back panel for open condition. Cover Interlock Fault Detected Verify that the cover is secure on the laser. Check cable connections to laser. © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... - Page 68 Adjust RF power if needed. Channel Over Temperature Fault Verify the eDrive fans are operational. Verify that the airflow through the driver is not obstructed. © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual...
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Page 69: Appendix A: Customer Service
Appendix A: Customer Service This form has been provided to encourage you to tell us about any difficulties you may have experienced while using the Northrop Grumman instruments or user manuals. Call or write the customer service department to bring attention to problems that you may not have personally experienced. -
Page 70: Questions
What is the measured power (W)? When did the problem happen? Have you changed any settings recently (yes/no)? Have you adjusted the laser to try to fix the problem (yes/no)? © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... - Page 71 Email or fax to: Northrop Grumman Cutting Edge Optronics, Inc. 20 Point West Boulevard Saint Charles, MO 63301 USA Phone: (636) 916-4900 Fax: (636) 916-4994 Email: st-ceolaser-info@ngc.com © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual...
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Page 72: Appendix B: System International Units
µ electric charge Coulomb nano electric potential Volt pico Ω resistance femto inductance Henry atto magnetic flux Weber magnetic flux Tesla density luminous intensity candela temperature Kelvin © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... -
Page 73: Appendix C: Acronyms
HeNe Helium Neon Harmonic Mirror High-Reflection International Electrotechnical Commission Lithium Triborate Nitrogen Nd:YAG Neodymium-Doped Yttrium Aluminum Garnet Nanometer OSHA Occupational Safety and Health Administration Pulse Rate Frequency © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... - Page 74 Pounds per Square Inch Radio Frequency Relative Humidity Root Mean Square Second Harmonic Generator Thermal Electric Cooler TEM00 Transverse Electromagnetic Mode Transistor - Transistor Logic Ultraviolet Volts, Alternating Current © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual...
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Page 75: Index
Daily Operation, 36 Laser Safety Desiccant, 16, 18, 40, 41, 42, 43 Emission, v Diode Module, 55 Environment, 8, 9, 18, 36, 43 ESD, v, 9 Exposure, 8, 36 © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual... - Page 76 Oscillator, 2, 3, 4 Output Power, 37, 45, 52, 53 Output Window, 12, 33 TEC Controller, 3, 4, 6, 34, 35, 36, 45, 47, 52 Troubleshooting, 52 Misalignment, 54 © 2018 Cutting Edge Optronics, Inc. Patara I and II Laser User Manual...