Problem in continuous function of Excimer laser

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SUMMARY

The discussion centers on troubleshooting an old Excimer laser system (XeCl) with an output energy of 400mJ, pulse width of 30ns, and frequency range of 1-100Hz. The laser operates for less than one hour after filling with new gases, after which the output energy decreases continuously. Despite maintaining a constant internal pressure in the cavity for months and testing for leaks with a He detector, no output energy is produced if the laser is not switched on for an hour. The issue may stem from the gas delivery system, particularly the 25-foot stainless steel pipeline used to fill HCl gas into the laser cavity.

PREREQUISITES
  • Understanding of Excimer laser operation principles
  • Knowledge of gas handling and pressure systems
  • Familiarity with laser diagnostics and troubleshooting techniques
  • Experience with leak detection methods in high-pressure systems
NEXT STEPS
  • Investigate the integrity of the gas delivery system and potential blockages
  • Research methods for maintaining gas purity in Excimer lasers
  • Learn about the effects of gas composition on laser performance
  • Explore advanced leak detection techniques for high-pressure systems
USEFUL FOR

Laser engineers, researchers in photonics, and technicians working with Excimer laser systems who are troubleshooting performance issues.

Amjad Hussain Bhatti
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I am student of MS and working in the field of laser. I am trying to run an old Excimer laser system (XeCl) having output energy 400mJ, pulse width 30ns and frequency 1-100Hz. The laser works only for less than one hours after filling with new gases and the energy continuously decreases within this time. Even If I shall not switched ON the laser for one hour then no output energy comes from the laser.
I do not understand the exact problem in the laser, please help me in this case.
Amjad Bhatti
 
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Have you got soje sort of pressure gauge to see if the gas is staying in the tube? It could be as simple as a leak in the system
 
I am working in the field of laser. I am trying to run an old Excimer laser system (XeCl) having output energy 400mJ, pulse width 30ns and frequency 1-100Hz. The laser works only for less than one hours after filling with new gases and the energy continuously decreases within this time without decreasing the internal pressure of the cavity. the internal pressure of cavity remains constant for a longer time even more than two to three months. Also If I shall not switched ON the laser for one hour then no output energy comes from the laser. I have tested the system with He detector and found no leakage in the system.
One thing I want mention here that I am using SS pipe line having length about 25 feet to fill HCl gas to the laser cavity.
I do not understand the exact problem in the laser, please help me in this case.
Amjad Bhatti
 

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