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コヒレント・ジャパン株式会社 安全保障輸出委員会
TEL: 03-5365-7203
Customer satisfaction is Coherent’s most important measure of quality. Factory trained service engineers, in offices throughout the world, offer technical support and quick response time. Continuous training of technical support and field service engineers ensure the very best in product and customer care.
It is the mission of the Coherent Product Support Team to provide the real-time service expected from the leader in the laser industry. This section of Coherent’s Service and Support site is to provide you with a complete array of service tools and information.
Coherent’s CO2 System troubleshooting information covers 3 models:
The Diamond laser series is a modular, RF excited, sealed industrial CO2 modulated laser. The Diamond K-150/K-200/K-250 Basic System consists of a laser head, RF amplifier, and Diamond digital interface (DDI).
Several options are available for this Diamond system including:
Advanced troubleshooting section (requires knowledge of electronics measurement and digital volt meter):
Related symptoms: When I turn the laser system on nothing happens.
Background information: The laser system has an interlock circuit that the customer/integrator can interface to. This interlock circuit prevents the laser from turning on if a safety requirement is not met. The interlock circuit uses a 5 VDC power supply that turns on the main 48 VDC power supply when all of the interlocks, external and internal are properly connected.
Basic troubleshooting:
Performance Package troubleshooting:
Related symptoms; Laser system won’t run above certain duty cycles. Laser system will shut down when modulation is turned on.
Related symptoms; laser output skips.
Advanced troubleshooting section (requires knowledge of electronics measurement and digital volt meter):
Related symptoms; VSWR light on, Duty Cycle light on, Forward light on, Reflected light on.
See Chapter titled “Maintenance and Troubleshooting” in the Operator’s Manual for definition of RF warning lights. (Note: Warning lights can come on due to transient conditions. Always first attempt to clear the warning lights using the Fault Reset switch on the front panel of the remote control unit.)
For complete information refer to the Chapter titled, “Maintenance and Troubleshooting”, of the Operator’s Manual.
Advanced troubleshooting section (requires knowledge of electronics measurement and digital volt meter or oscilloscope.):
The Diamond laser is a modular, RF excited, sealed-off industrial CO2 pulsed laser. The Diamond K-150/K-200/K-250/K-500 OEM system consists of a laser head, RF amplifier, and an RF cable. A DC power supply is required and can be supplied by Coherent.
Related symptoms: When I turn laser system on nothing happens. Laser system drops out.
Background information: The laser system will not turn on if there is no 48 V from the DC power supply.
Related symptoms; Laser system won’t run above certain duty cycles. Laser system will shut down when modulation is turned on.
Related symptoms; laser output skips.
RF warning signals should be measured while the laser is receiving a modulation signal. A connector needs to be built by the integrator to measure these signals. Connect three DB25 connectors in parallel for form a breakout connector. One of the connectors needs to be a male type and another needs to be a female type. The third connector can be either male or female.
Related symptoms; See chapter titled “Maintenance and Troubleshooting” in the Operator’s Manual for definition of RF warnings. (note: Warning faults can come on without problems in transient conditions.) See Operator’s Manual illustration titled, RF Amplifier Output Singals - Normal Operating Conditions.
The Diamond laser series is a modular, RF excited, sealed industrial CO2 pulsed laser. The Diamond K-150/K-200/K-250/K-500 Performance Package consists of a laser head, a power module, a remote control unit and interconnection cables. The power module contains:
Advanced troubleshooting section (requires knowledge of electronics measurement and digital volt meter):
Related symptoms: When I turn the laser system on nothing happens.
Background information: The laser system has an interlock circuit that the customer/integrator can interface to. This interlock circuit prevents the laser from turning on if a safety requirement is not met. The interlock circuit uses a 5 VDC power supply that turns on the main 48 VDC power supply when all of the interlocks, external and internal are properly connected.
Basic troubleshooting:
Performance Package troubleshooting:
Related symptoms; Laser system won’t run above certain duty cycles. Laser system will shut down when modulation is turned on.
Related symptoms; laser output skips.
Advanced troubleshooting section (requires knowledge of electronics measurement and digital volt meter):
Related symptoms; VSWR light on, Duty Cycle light on, Forward light on, Reflected light on.
See Chapter titled “Maintenance and Troubleshooting” in the Operator’s Manual for definition of RF warning lights. (Note: Warning lights can come on due to transient conditions. Always first attempt to clear the warning lights using the Fault Reset switch on the front panel of the remote control unit.
For complete information refer to the Chapter titled “Maintenance and Troubleshooting” of the Operator’s Manual.
Advanced troubleshooting section (requires knowledge of electronics measurement and digital volt meter or oscilloscope.):
Troubleshooting information for your DPSS laser system.
Guidelines to troubleshooting the Avia, Verdi and Vitesse product lines.
For Avia, Verdi and Vitesse Lasers
If the battery fault has been displayed, and it is necessary to remove AC power for more than a few seconds, be sure to run the LBO/SHG Cooldown program, before removing AC power. Refer to Operator’s Manual for instructions.
If after verifying and/or correcting the checklist items the system is still not operating contact Coherent Technical Support or your local service representative for assistance.
For AVIA Lasers
Stabilize head baseplate temperature.
Verify that the ambient temperature is not excessive, or abnormally unstable. If the head is water-cooled, verify the water flow and temperature setpoint are correct.
If after verifying and/or correcting the checklist items the system is still not operating contact Coherent Technical Support or your local service representative for assistance.
In general, there is very little that can be done to improve the mode of a solid state laser. The optics are permanently aligned, and cannot be adjusted. Mode problems occur rarely. When they do occur, they are often indicative of damage to an optic. Typically, the laser head must be returned to the factory to correct a mode problem. If after verifying and/or correcting the checklist items the system is still not operating contact Coherent Technical Support or your local service representative for assistance.
For AVIA Lasers
Ensure the laser is running at full power. If necessary, follow the “Low Power” troubleshooting steps.
At very low power, the laser may be too far outside its normal operating parameters to meet mode specifications. If the mode quality is acceptable at higher powers, but not at low powers, and a low power beam is required, the recommended method is to run the laser at higher power, and use a series of external beamsplitters to reduce the laser beam power.
ThermaTrack is a moving mirror whose position can be adjusted to compensate for thermal lensing effects of the laser rods. The position of ThermaTrack must be reoptimized every time the diode pump power or repetition rate is adjusted. It can be optimized from the main Avia menu, by scrolling the arrow to “ThermaTrack” and pushing in the front panel control knob. This initiates an automatic optimization of the ThermaTrack mirror, which will result in optimum laser power and mode quality.
It is unlikely that reoptimizing the temperatures of the crystals and diodes will solve a serious mode problem. However, a minor mode problem may be alleviated by ensuring the crystals are operating at peak efficiency. To optimize the SHG, operate the laser at normal operating conditions (power and repetition rate), ensure the ThermaTrack adjustment is optimized, and then access the “Temperature Optimization” menu. Scroll the arrow to “SHG Temperature” and press “Select”. Press “Select” again to initiate the temperature optimization, which will require approximately 5 minutes to complete. Repeat this procedure to optimize the THG, Diode 1 and Diode 2 temperatures.
The laser rods setpoint temperature cannot be adjusted from the temperature they were set to in the factory, which is 25ºC. Access the Servo Status menu and verify the laser rods are locked at this temperature.
Any crystal in which UV light is generated, will eventually become damaged by the UV light. For this reason, the THG crystal in the Avia laser has at least 20 sites. Shift the THG crystal to a new spot, to determine whether a burn or defect on the existing site is causing the mode problem. To shift the crystal spot, turn the Pulsing off, access the “Crystal Shifter” menu, and turn the knob to access an unused crystal spot. Operate the laser at normal operating conditions, and carefully examine the mode to determine if the mode problem has been corrected. If the mode is not improved, shift the THG crystal back to the original spot.
For AVIA, Verdi and Vitesse Lasers
For AVIA, Verdi and Vitesse Lasers
When the output power of Avia, Verdi and Vitesse lasers is low, the laser will automatically respond by increasing the current to the FAPs. Eventually, the laser will reach the software-controlled current maximum, and an “Over Current Fault” will result. Over current faults are essentially low power faults.
Note: Therma Track is not available for AVIA Ultra systems.
Since the optics of the solid state lasers are permanently aligned, there are no optical positioning adjustments that can be made to increase power. If after verifying and/or correcting the checklist items the system is still not operating contact Coherent Technical Support or your local service representative for assistance.
For AVIA Lasers
Optimize ThermaTrack.
For AVIA Lasers
Verify the external enable signal is supplied.
Verify an external enable signal is being supplied. This can be done in 3 ways – a shorting BNC can be connected to the external enable BNC connection on the rear panel of the power supply, a user-supplied external enable signal can be input at the external enable BNC, or , a user-supplied external enable signal can be input at the 25-pin D-connector on the rear panel of the power supply – contact the Operator’s manual for details and pinouts.
If the laser does not operate in Internal trigger mode, verify the diodes and pulsing are turned ON. Access the “Pulse Delete Adjust/ThermEQ Adjust” menu. Set Pulse Delete/ThermEQ OFF. Check for milliWatt-level CW laser output. (Refer to the next troubleshooting step for further details.) If CW emission is present when the diodes and pulsing are turned on, the RF generator or Pulse board may be damaged. Contact Coherent Service or your authorized Coherent representative for further assistance.
Carefully measure the laser output with an external power meter. A malfunction of the photocells can cause the front panel display to report “No Pulsing” even though the laser is operating normally. Contact Coherent Service or your authorized Coherent representative to arrange servicing.
If the laser is, in fact, not pulsing, but rather, emitting a low energy (milliWatt) CW beam, access the “Pulse Delete Adjust/ThermEQ Adjust” menu. Set Pulse Delete/ ThermEQ OFF. If the laser is still emitting a low energy CW beam, the most likely cause is a failure of the RF generator or Pulse board. Contact Coherent Service or your authorized Coherent representative to arrange servicing.
For AVIA Lasers
Operate laser with Internal triggering.
Any instability in the external triggering circuitry, such as missing triggers, may appear as a power fluctuation. Disconnect the cable, which delivers the external trigger signals, and operate the laser with internal triggering. Re-evaluate the power stability. Examine the external trigger signals on an oscilloscope to verify they are of the correct voltage and the intended repetition rate.
If possible, use a fast photodiode and oscilloscope to examine the power stability. One recommended photodiode is the Electro-Optics Technology model #ET-2020, with <1.5 nanoseconds rise time. This is a biased silicon photodetector. Refer to the website at: http://www.eotech.com.
For AVIA, Verdi and Vitesse lasers
For Avia, Verdi and Vitesse Lasers
If the battery fault has been displayed, and it is necessary to remove AC power for more than a few seconds, be sure to run the LBO/SHG Cooldown program, before removing AC power. Refer to Operator’s Manual for instructions. If after verifying and/or correcting the checklist items the system is still not operating contact Coherent Technical Support or your local service representative for assistance.
For Verdi Lasers
Run the laser at normal operating conditions, and record the head baseplate temperature hourly, over the course of a day, in order to determine the variation in the head baseplate temperature. Consider whether the variation in head baseplate temperature correlates with the variation in beam pointing. If the head baseplate temperature varies markedly throughout the day, water cooling of the baseplate is recommended.
Water-cooling of the head is required only for V10 and V18 lasers, but pointing stability will be markedly enhanced for all powers of Verdi lasers, if the head is water-cooled. If the Verdi laser is used in an application where pointing stability is a major concern, the head should be water-cooled. Contact Coherent Service or your authorized Coherent representative for further details.
In general, there is very little that can be done to improve the mode of a solid state laser. The optics are permanently aligned, and cannot be adjusted. Mode problems occur rarely. When they do occur, they are often indicative of damage to an optic. Typically, the laser head must be returned to the factory to correct a mode problem. If after verifying and/or correcting the checklist items the system is still not operating contact Coherent Technical Support or your local service representative for assistance.
For Verdi Lasers
For AVIA, Verdi and Vitesse Lasers
For AVIA, Verdi and Vitesse Lasers
When the output power of Avia, Verdi and Vitesse lasers is low, the laser will automatically respond by increasing the current to the FAPs. Eventually, the laser will reach the software-controlled current maximum, and an “Over Current Fault” will result. Over current faults are essentially low power faults.
Since the optics of the solid state lasers are permanently aligned, there are no optical positioning adjustments that can be made to increase power. If after verifying and/or correcting the checklist items the system is still not operating contact Coherent Technical Support at 1-800-367-7890 or your local service representative for assistance.
For Verdi Lasers
Verify the vanadate, etalon, Diodes, and LBO are at the correct operating temperatures.
The temperatures at which the vanadate, etalon, Diodes and LBO crystals perform most efficiently are determined when the laser is built. These optimum operating temperatures are listed on the Customer Data Sheet, which was shipped with the laser. Refer to this document. Access the “Temperature Set Points” menu, and verify that the “Set Pt” (the set temperature) and the “Read T” (the actual temperature) are equal to the temperature noted on the Data Sheet. The LBO or Diode temperatures may be slightly different than the value noted on the Data sheet, if the LBO or Diode optimizations have been run
Verify the laser is operating at power greater than 0.5 Watt.
When the laser is running at a power less than 0.5 Watt, it is operating close to the lasing threshold. Under these low power conditions, single frequency operation cannot be guaranteed. Ensure the laser is operating at a power greater than 0.5 Watt. If a lower power laser beam is required, operate the laser at a higher power, and use a series of beamsplitters to reduce the laser power.
When the output power of Verdi and Vitesse lasers is low, the laser will automatically respond by increasing the current to the FAPs. Eventually, the laser will reach the software-controlled current maximum, and an “Over Current Fault” will result. Over current faults are essentially low power faults. Refer to the troubleshooting advice for “Low Power”.
Verify power instability with an external power meter.
To verify whether the instability is caused by the laser, or the photodiode electronics, use an external power meter or photodiode to examine the laser stability.
For AVIA, Verdi and Vitesse lasers
Shutter mismatch faults occur when the system CPU indicates the shutter is in one particular state (either open or closed) but the shutter sensor indicates the shutter is in the opposite state. If this fault occurs repeatedly, the cause may be either a mechanical failure of the shutter, or an electrical failure of the sensor. Contact Coherent Technical Support or your local service representative for assistance.
For Avia, Verdi and Vitesse Lasers
If the battery fault has been displayed, and it is necessary to remove AC power for more than a few seconds, be sure to run the LBO/SHG Cooldown program, before removing AC power. Refer to Operator’s Manual for instructions.
For Vitesse Lasers
Stabilize head baseplate temperature.
Verify that the ambient temperature is not excessive, or abnormally unstable. If the head is water-cooled, verify the water flow and temperature setpoint are correct.
Run the laser at normal operating conditions, and record the head baseplate temperature hourly, over the course of a day, in order to determine the variation in the head baseplate temperature. Consider whether the variation in head baseplate temperature correlates with the variation in beam pointing. If the head baseplate temperature varies markedly throughout the day, water cooling of the baseplate is recommended.
All Vitesse models have a water-cooled baseplate that must be maintained at 25 ± 1ºCelsius.
In general, there is very little that can be done to improve the mode of a solid state laser. The optics are permanently aligned, and cannot be adjusted. Mode problems occur rarely. When they do occur, they are often indicative of damage to an optic. Typically, the laser head must be returned to the factory to correct a mode problem. If after verifying and/or correcting the checklist items the system is still not operating contact Coherent Technical Support or your local service representative for assistance.
For Vitesse Lasers
For AVIA, Verdi and Vitesse Lasers
For AVIA, Verdi and Vitesse Lasers
When the output power of Avia, Verdi and Vitesse lasers is low, the laser will automatically respond by increasing the current to the FAPs. Eventually, the laser will reach the software-controlled current maximum, and an “Over Current Fault” will result. Over current faults are essentially low power faults.
Since the optics of the solid state lasers are permanently aligned, there are no optical positioning adjustments that can be made to increase power. If after verifying and/or correcting the checklist items the system is still not operating contact Coherent Technical Support or your local service representative for assistance.
For Vitesse Lasers
Operate the laser in Verdi light loop, and verify Verdi laser is operating at full power.
Access the “Light Loop Control” menu, scroll the arrow to “Verdi Light Loop Mode” and press “Select” to put the system into Verdi light loop. Press EXIT. Access the “Power Adjustment” menu, and set the Verdi power to full power. If the Verdi cannot maintain full power, follow the Verdi troubleshooting steps for “Low Power”.
For Vitesse Lasers
Verify the baseplate is 25 ± 1ºCelsius.
Optimum alignment of the Verdi pump beam into the ultrafast head can only be achieved if the baseplate temperature is 25 ± 1ºCelsius. Adjust the chiller temperature as necessary to ensure the baseplate temperature is correct.
Consult the Data Sheet shipped with the laser to ensure the Vitesse laser is lasing at a CW power between the Q-Switching and CW Breakthrough limits. Adjust the Verdi pump power accordingly. If the Verdi power is low, consult the Verdi “Low Power” troubleshooting page. If the Verdi power is normal, but the Vitesse CW power is low, consult the Vitesse “Low Power” troubleshooting page. If both Verdi and Vitesse CW powers are normal, but the systems will not modelock, put the system in Standby, and attempt to restart the system. If the modelocking problem occurs repeatedly, despite adequate Vitesse CW power, contact Coherent Service or your authorized Coherent representative.
When the output power of Verdi and Vitesse lasers is low, the laser will automatically respond by increasing the current to the FAPs. Eventually, the laser will reach the software-controlled current maximum, and an “Over Current Fault” will result. Over current faults are essentially low power faults. Refer to the troubleshooting advice for “Low Power”.
Verdi “Low Power” troubleshooting steps:
When the output power of Avia, Verdi and Vitesse lasers is low, the laser will automatically respond by increasing the current to the FAPs. Eventually, the laser will reach the software-controlled current maximum, and an “Over Current Fault” will result. Over current faults are essentially low power faults.
Since the optics of the solid state lasers are permanently aligned, there are no optical positioning adjustments that can be made to increase power. If after verifying and/or correcting the checklist items the system is still not operating contact Coherent Technical Support or your local service representative for assistance.
Verify the vanadate, etalon, Diodes, and LBO are at the correct operating temperatures.
The temperatures at which the vanadate, etalon, Diodes and LBO crystals perform most efficiently are determined when the laser is built. These optimum operating temperatures are listed on the Customer Data Sheet, which was shipped with the laser. Refer to this document. Access the “Temperature Set Points” menu, and verify that the “Set Pt” (the set temperature) and the “Read T” (the actual temperature) are equal to the temperature noted on the Data Sheet. The LBO or Diode temperatures may be slightly different than the value noted on the Data sheet, if the LBO or Diode optimizations have been run.
The LBO temperature may require periodic reoptimization. However, this is only recommended for 2 and 5 Watt systems. Do not run the LBO optimization program if the laser is an 8 or 10 Watt laser, as this may cause the laser performance to degrade, rather than improve. To run the LBO optimization, operate the laser at full power, or at the highest operable power. The optimization program will not run unless the laser is operating at > 80% of full power. Access the “LBO Optimization” menu, and press “Select” to initiate the optimization. The optimization will require approximately 45 minutes, and will display a message when complete.
Operate the laser at the highest power possible. Access the “Diode Parameters” menu. Examine the values for “Diode 1 Photocell” and “Diode 2 Photocell”. If the FAP modules are operating at full power, the photocell voltages should be close to 2.5 Volts. If either of these voltages is significantly higher or lower than 2.5 Volts, this may indicate a FAP failure. Contact Coherent Service, or your authorized representative for further troubleshooting assistance.
Vitesse “Low Power” troubleshooting steps:
Operate the laser in Verdi light loop, and verify Verdi laser is operating at full power.
Access the “Light Loop Control” menu, scroll the arrow to “Verdi Light Loop Mode” and press “Select” to put the system into Verdi light loop. Press EXIT. Access the “Power Adjustment” menu, and set the Verdi power to full power. If the Verdi cannot maintain full power, follow the Verdi troubleshooting steps for “Low Power”.
For Vitesse Lasers
Verify power instability with an external power meter.
To verify whether the instability is caused by the laser, or the photodiode electronics, use an external power meter or photodiode to examine the laser stability.
Access the “Peak Hold” menu (a Vitesse Setting submenu). Verify the “Peak Hold setting” is OFF.
For Vitesse Lasers
Verify the baseplate is 25 ± 1ºCelcius.
In order to achieve optimum alignment of the Verdi pump beam into the ultrafast laser head, the baseplate temperature must be 25 ± 1ºC. If the temperature deviates appreciably from this value, the PZTs will compensate, but if the temperature is too far from 25ºC, the PZTs will reach the end of their range (0-5 Volts). Adjust the chiller temperature as necessary to ensure the baseplate temperature is correct. Normally a chiller reservoir temperature of approximately 20ºC results in a baseplate temperature of 25ºC.
Verify the Verdi pump laser is at the correct power to generate Vitesse power between the Q-Switch and CW-Breakthrough limits. If the Verdi pump power is too low, the response of the PZTs may be adversely affected.
For AVIA, Verdi and Vitesse lasers – Clear the fault. Retry the shutter. If fault occurs repeatedly, schedule a service call to replace the shutter assembly. Shutter mismatch faults occur when the system CPU indicates the shutter is in one particular state (either open or closed) but the shutter sensor indicates the shutter is in the opposite state. If this fault occurs repeatedly, the cause may be either a mechanical failure of the shutter, or an electrical failure of the sensor. Contact Coherent Technical Support or your local service representative for assistance.
To maximize performance and longevity, there are specific cleaning procedures for the handling and cleaning of various optical components. With such materials and variations, Coherent offers a number guides for your reference.
If your optic is not listed here, please contact us.
The laser system plasma tube will have zero, one, or two Brewster windows depending on the system type. Sealed mirror systems may have one window or no accessible windows. Other system types have two windows.
Great care should be taken when cleaning the plasma tube Brewster windows. A scratch on the window surface may degrade performance to the extent that the tube must be replaced. The Brewster window is located in a sealed cavity and rarely needs to be cleaned. Turn off the laser system before cleaning the Brewster window. Extremely high voltage is present adjacent to the window when the laser is on. This voltage may cause serious shock to the operator, or if shorted to ground may result in catastrophic damage to the plasma tube and/or power supply.
Cleaning Procedure
For the front window, slightly rotate the bellows back and forth while sliding the dust shield/bellows towards the front of the head to expose the Brewster window. There will be some resistance when sliding the bellows because the Teflon O-rings produce seals to the window stem and aperture transition tube.
Optic cleaning is not a required component of a regular laser system maintenance schedule. Optics should only be cleaned as a corrective action for marked power decrease or poor mode quality. Optics should not be cleaned unless signs of contamination are clearly visible on the optic surfaces. Unnecessary cleaning will shorten the life span of the optical coating.
Optics and optic coatings can be easily damaged. Never touch the optical surfaces with bare skin, hemostats, or materials other than lens tissue.
The Hemostat and Lens Tissue Method
On some systems the high reflector (HR) is sealed to the tube and is not accessible. Do not attempt to extract and clean the optic. An example of a sealed mirror tube is shown in the figure below.
Handle laser optics with care. A scratch, trace of dirt, or film will diminish the laser’s efficiency. Before cleaning optics, be sure that your hands are clean and that a clean, cushioned work surface is available.
Optics and optic coatings can be easily chipped or scratched. To prevent damage when removing or replacing mirrors, always grasp the optic by the outer edge. Never touch the optical surfaces with your bare skin, the hemostats, or materials other than lens tissue. Only fresh (dry) spectroscopic grade Methanol should be used to clean optics.
Cleaning Procedure
For diode pumped laser systems (e.g., Verdi, AVIA, MBD-200, Azure, Vitesse, etc.) the optical transport fiber is sealed within the diode (FAP-I) assembly and should not require cleaning under normal operating conditions. When replacing the FAP-I assemblies of these systems, and for optical transport fibers in general, the optical surface should always be viewed with a magnifier to verify the presence of contamination before cleaning. Do not clean the fiber if there is no visible contamination.
The end of the fiber optic cable constitutes an optical surface. Do not allow the end of the fiber optic cable to make contact with any surface, including your hands.
Optics and optic coatings can be chipped or scratched easily. Wear finger cots, or powder free surgical gloves, while handling fiber optic cables. Only fresh (dry) spectroscopic grade Methanol should be used as a cleaning solvent. Do not use Acetone as a cleaning solvent on the fiber optical surfaces. It will dissolve the matrix which supports the fiber, and permanently destroy the optical transport fiber.
The following outlines the proper procedure for cleaning optics that has been removed from the laser system. To prevent the inadvertent misalignment of the laser system optics should be installed cleaned in their mounts whenever possible.
Optic cleaning is not a required component of a regular laser system maintenance schedule. Optics should only be cleaned as a corrective action for marked power decrease or poor mode quality. Optics should not be cleaned unless signs of contamination are clearly visible on the optic surfaces. Unnecessary cleaning will only shorten the life span of the optical coating.
Optics and optic coatings can be easily chipped or scratched. Therefore, to prevent damage when removing or replacing mirrors, always grasp the optic by the outer edge. Never touch the optical surfaces with bare skin.
Handle laser optics with care. A scratch, trace of dirt, or film will diminish the laser’s efficiency. Always use finger cots, latex gloves, or the equivalent when handling optics, and use a clean, cushioned work surface.
Optics Inspection
The Drop and Drag Method
On some systems, the high reflector (HR) is sealed to the tube and is not accessible. Do not attempt to extract and clean the optic.
Handle laser optics with care. A scratch, trace of dirt, or film will diminish the laser’s efficiency. Before cleaning optics be sure that your hands are clean and that a clean, cushioned work surface is available.
Optics and optic coatings can be easily chipped or scratched. To prevent damage when removing or replacing mirrors, always grasp the optic by the outer edge. Never touch the optical surfaces with bare skin, the hemostats, or materials other than lens tissue. Only fresh (dry) spectroscopic grade Methanol should be used to clean optics.
Cleaning Procedure
Phone Support
Coherent’s Laser Machining Centers are the most compact, flexible laser cutting tools available for any production shop. Production Automation options are available for enhanced productivity.
Worldwide phone support hotlines ensure that an expert drawing on the resources of a global company can always be reached. To reach a product support engineer, please contact us.
Warranty
All laser machining tools come with a 12 month warranty that covers service and parts. For additional information on warranty terms, please contact Coherent’s Service Department.
Please contact Coherent Service with any support or warranty questions at:
LMTservice@coherent.com or 1-866-247-4767 (Outside the U.S. 01-408-764-4983)
Coherent’s Wilsonville, Oregon calibration laboratory is fully accredited to ISO/IEC 17025:2005 by ANAB, a brand of the ANSI-ASQ National Accreditation Board and recognized internationally by ILAC, APLAC, and IAAC. Certification to ISO 17025 is a formal recognition that a calibration laboratory is using valid and appropriate methods and is competent to carry out specified tests or calibrations.
A detailed discussion of the Scope of Accreditation and the Technical Requirements of ISO 17025 Accreditation can be found on our ISO 17025:2005 Accredited web page.
Calibration of a Coherent power and energy laser measurement product includes:
Minor repairs including fixing manufacturer’s defects, hardware updates, firmware, software updates, damaged connectors, and other small repairs. Detector element replacement due to laser damage and damage caused by negligent use is not covered – for customer-caused damage, an additional repair service charge is applied.
This level of service results in an overall lower cost of ownership for our customers. Those customers who routinely send products in for annual calibration are realizing a lifetime warranty for their products.
By choosing Coherent, you are choosing a company you can rely on for fast delivery, low warranty rate, and lower overall cost of ownership.
Re-certify Once a Year
Coherent laser power and energy meters are precision instruments, capable of delivering very accurate measurements as well as providing many years of useful service. To maintain this high level of performance, and to ensure compliance with your quality and ISO certification, it is important to have your measurement system serviced and re-certified once per year. Extended use of laser power and energy meters and sensors, as well as environmental factors, can have an adverse effect on accuracy and also result in wear and/or damage to parts critical to optimum performance.
Requesting an RMA#
To request authorization for a calibration or repair service you must obtain an RMA# from Coherent, Inc. by contacting us at LSMService@coherent.com (US) / LMC.RMA@coherent.com (EU) or Service.LMC.Dieburg@coherent.com (EU). Please include the following information…
As the world’s largest laser manufacturer, Coherent calibration facilities contain the widest possible range of light sources from 193 nm to 10,600 nm, with powers ranging nanowatts to kilowatts.
Coherent’s investment in service and calibration facilities and personnel is an on-going process, and we strive to maintain our unique technological edge. Our Quality Management System is registered to ISO 9001:2000; our products are NIST-traceable; and our calibration labs are ANSI-Z540-compliant.
In addition, Coherent team delivers the industry’s best service, with a knowledgeable and responsive staff, and rapid turnaround.
Product Description | Part Number | Product Description | Part Number |
BeamFinder | 1098427 | PM150-19A | 1098510 |
EnergyMax-RS J-10MB-HE Energy Sensor | 1191429 | PM150-19B | 1098415 |
EnergyMax-RS J-10MB-1531 Energy Sensor | 1231479 | PM150-19C | 1098412 |
EnergyMax-RS J-10MB-LE Energy Sensor | 1191428 | PM150-50 | 1098398 |
EnergyMax-RS J-10SI-HE Energy Sensor | 1191427 | PM150-50A | 1098510 |
EnergyMax-RS J-25MB-LE Energy Sensor | 1191431 | PM150-50B | 1098415 |
EnergyMax-RS J-50MB-HE Energy Sensor | 1191432 | PM150-50C | 1098412 |
EnergyMax-RS J-50MB-YAG Energy Sensor | 1191430 | PM150-50XB | 1098441 |
1219962 EnergyMax-RS J-50MB-YAG-1535 Energy Sensor | 1219962 | PM150-50XC | 1098443 |
EnergyMax-RS J-50MT-10KHZ Energy Sensor | 1191433 | PM200F-19 | 1098480 |
EnergyMax-USB J-10MB-HE Energy Sensor | 1191436 | PM200F-50 | 1098472 |
EnergyMax-USB J-10MB-LE Energy Sensor | 1191435 | PM200F-50X | 1113493 |
EnergyMax-USB J-10MT-10KHZ Energy Sensor | 1191445 | PM300 | 1141474 |
EnergyMax-USB J-10SI-HE Energy Sensor | 1191434 | PM300F-19 | 1098509 |
EnergyMax-USB J-25MB-HE Energy Sensor | 1191442 | PM300F-50 | 1098417 |
EnergyMax-USB J-50MB-IR Energy Sensor | 1191440 | PM300F-50X | 1098481 |
EnergyMax-USB J-25MB-1511 Energy Sensor | 1213190 | PM1K | 1098392 |
EnergyMax-USB J-25MB-LE Energy Sensor | 1191441 | PM1K-100 | 1098490 |
EnergyMax-USB J-25MT-10KHZ Energy Sensor | 1191446 | PM1K-36B | 1098333 |
EnergyMax-USB J-25MUV-193 Energy Sensor | 1191448 | PM3K | 1098462 |
EnergyMax-USB J-50MB-HE Energy Sensor | 1191444 | PM3K-100 | 1098506 |
EnergyMax-USB J-50MB-LE Energy Sensor | 1191443 | PM3Q | 1098419 |
EnergyMax-USB J-50MB-YAG Energy Sensor | 1191437 | PM5K | 1098454 |
EnergyMax-USB J-50MB-YAG-1535 Energy Sensor | 1191438 | PM5K-100 | 1098461 |
EnergyMax-USB J-50MB-YAG-1528 Energy Sensor | 1191439 | PM5K-200 | 1098505 |
EnergyMax-USB J-50MT-10KHz-1571 Energy Sensor | 1208286 | PowerMax RS - LM-10 Power Sensor | 1168341 |
EnergyMax-USB J-50MT-10KHZ Energy Sensor | 1191447 | PowerMax RS - LM-45 Power Sensor | 1211474 |
EnergyMax-USB J-50MUV-248 with Diffuser Energy Sensor | 1191449 | PowerMax RS - LM-150LS Power Sensor | 1212246 |
FieldMate | 1098297 | PowerMax RS - LM-200 110V Power Sensor | 1258401 |
FieldMaxII-P | 1098581 | PowerMax RS - LM-1000 Power Sensor | 1180872 |
FieldMaxII-TO | 1098579 | PowerMax RS - LM-5000 Power Sensor | 1181653 |
FieldMaxII-TOP | 1098580 | PowerMax-RS PM10-19C Power Sensor | 1168345 |
J-10MB-HE | 1110843 | PowerMax-RS PS19Q Power Sensor | 1179504 |
J-10MB-LE | 1110855 | PowerMax-RS PM30 Power Sensor | 1174258 |
J-10MT-10KHZ | 1110856 | PowerMax RS - PM30X Power Sensor | 1174259 |
J-25MB-HE | 1110746 | PowerMax-RS PM150-19C Power Sensor | 1168347 |
J-25MB-IR | 1110577 | PowerMax-RS PM150-50C Power Sensor | 1168349 |
J-25MB-LE | 1110743 | PowerMax-RS PM1K-36C Power Sensor | 1174267 |
J-25MT-10KHZ | 1110747 | PowerMax RS - PM1KX-100 Power Sensor | 1214871 |
J-25MUV-193 | 1110741 | PowerMax RS - PM2X Power Sensor | 1230323 |
J-25MUV-248 | 1110745 | PowerMax-RS PM3K Power Sensor | 1191293 |
J-50MB-HE | 1110573 | PowerMax USB - Beam Finder | 1233118 |
J-50MB-LE | 1110576 | PowerMax USB - LM-3 Power Sensor | 1168339 |
J-50MB-YAG | 1110744 | PowerMax-USB - LM-10 Power Sensor | 1168340 |
J-50MT-10KHZ | 1110574 | PowerMax-USB - LM-20 Power Sensor | 1174270 |
J-50MUV-193 | 1110575 | PowerMax-USB - LM-45 Power Sensor | 1168342 |
J-50MUV-248 | 1110572 | PowerMax USB - LM-100 Power Sensor | 1193300 |
J-Power | 1132205 | PowerMax USB - LM-150LS Power Sensor | 1275678 |
LabMax-TO | 1104619 | PowerMax USB - LM-200B Power Sensor | 1194641 |
LabMax-TOP | 1104622 | PowerMax-USB LM-200 110V Power Sensor | 1193407 |
LabMax-TOP w/GPIB | 1104620 | PowerMax-USB LM-200 220V Power Sensor | 1195840 |
LaserCheck | 1098293 | PowerMax-USB - LM-1000 Power Sensor | 1174268 |
LM-2 IR | 1098342 | PowerMax-USB LM-5000 Power Sensor | 1174269 |
LM-2 UV | 1098390 | PowerMax-USB PM2 Power Sensor | 1174264 |
LM-2 VIS | 1098298 | PowerMax USB - PM2X Power Sensor | 1257617 |
LM-3 HTD | 1098328 | PowerMax-USB PM3 Power Sensor | 1174263 |
LM-10 HTD | 1098304 | PowerMax USB - PM3K Power Sensor | 1276824 |
LM-45 HTD | 1098320 | PowerMax-USB PM3Q Power Sensor | 1191133 |
LM-100 HTD | 1098346 | PowerMax-USB PM10 Power Sensor | 1174262 |
LM-1000 | 1098409 | PowerMax-USB PM10-19C Power Sensor | 1168344 |
LM-2500 | 1098437 | PowerMax-USB PM30 Power Sensor | 1174257 |
LM-5000 | 1098421 | PowerMax USB - PM30X Power Sensor | 1263294 |
OP-2 IR | 1098416 | PowerMax USB - PM150-50 Power Sensor | 1223336 |
OP-2 UV | 1098401 | PowerMax-USB PM150-19C Power Sensor | 1168346 |
OP-2 VIS | 1098313 | PowerMax-USB PM150-50C Power Sensor Sensor | 1168348 |
PM2 | 1098329 | PowerMax USB - PM1K Power Sensor | 1232163 |
PM3Q | 1098419 | PowerMax-USB PM1K-36C Power Sensor | 1174266 |
PM10 | 1098338 | PowerMax USB - PM5K-100 Power Sensor | 1235755 |
PM10-19A | 1098423 | PowerMax-USB PS10 Power Sensor | 1174260 |
PM10-19B | 1098407 | PowerMax-USB PS19 Power Sensor | 1174261 |
PM10-19C | 1098455 | PowerMax-USB PS19Q Power Sensor | 1168343 |
PM10V1 | 1098418 | PowerMax-USB UV/VIS Quantum Power Sensors | 1168337 |
PM10X | 1098321 | PowerMax USB - Wand UV/VIS Quantum Power Sensor | 1212310 |
PM30V1 | 1098429 | PS10 | 1098350 |
PM30X | 1098498 | PS10Q | 1098400 |
PM150 | 1098444 | PS19 | 1098413 |
PM150X | 1098398 | PS19Q | 1098341 |
To prepare your instrument meter or sensor for return to Coherent, make a tag that includes the name and address of the owner, the contact individual, the serial number, and the RMA number you received from Coherent Customer Service. Attach this tag to the unit.
Wrap the product with polyethylene sheeting or equivalent material. If the original packing material and carton are not available, use a corrugated cardboard shipping carton with inside dimensions at least 6 in. (15 cm) taller, wider, and deeper than the product. The shipping carton must be constructed of cardboard with a minimum 375 lbs. (170 kg) test strength. Cushion the instrument unit in the shipping carton with packing material or urethane foam on all sides between the carton and the instrument or probe sensor. Allow 3 in. (7.5 cm) clearance on all sides, top, and bottom. Seal the shipping carton with shipping tape or an industrial stapler.
USA
Coherent Laser Measurement and Control Service Center
Attn: (your RMA number)
27650 SW 95th Avenue
Wilsonville, OR 97070
Europe
Coherent (Deutschland) GmbH
Dieselstr. 5 b
D-64807 Dieburg
Germany
Asia
Coherent Japan
Toyo MK Building
7-2-14 Toyo
Koto-Ku, Tokyo
135-0016 Japan
Click on the left navigation topics on this page to view various troubleshooting tips and documents.
If you do not find your product listed or have any questions, please feel free to contact us - customer.support@coherent.com
Go to our “Downloads” section to view Pre-installation documents for Coherent products.
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Coherent has locations across the globe that are available to provide support for any product, service or inquiry.
Visit our Contact Page to connect with any of our global sites.
email: tech.sales@coherent.com
Corporate Headquarters
Coherent Inc.
5100 Patrick Henry Drive
Santa Clara, CA 95054 USA
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Besuchen Sie unsere Kontaktseite, um direkt Kontakt mit einem unserer weltweiten Standorte aufzunehmen.
E-Mail: sales.germany@coherent.com
Dieselstr. 5b
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Deutschland
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email: coherent.france@coherent.com
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Coherent has locations across the globe that are available to provide support for any product, service or inquiry.
Visit our Contact Page to connect with any of our global sites.
联系我们
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Coherent has locations across the globe that are available to provide support for any product, service or inquiry.
Visit our Contact Page to connect with any of our global sites.
email: info.spain@coherent.com
Corporate Headquarters
Coherent Inc.
5100 Patrick Henry Drive
Santa Clara, CA 95054 USA
セールス : +81 03 5365 7100 サービス : +81 0120 997 356
Coherent has locations across the globe that are available to provide support for any product, service or inquiry.
Visit our Contact Page to connect with any of our global sites.
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