Study of the C→A transition excimer laser threshold condition

DENG Guo-qing; ZHU Zhi-qiang; YU Yin-shan

For the laser system performance,the threshold condition is of great significance.The threshold condition of C→A transition low gain,broadband-pulsed excimer laser is closely relative to the pump pulse.Based on the rate equations of four-level laser energy systems,the analytical methods of gain switching and Q-switch are used to study the threshold condition of the(C→A) transition low gain pulsed excimer laser.While the threshold conditions in the different gain duration are given.The analytical results show the threshold condition of the C→A transition low gain excimer laser is fundamentally different from the CW laser in short gain pulse,and depends on time integrated gain coefficient that has to exceed a critical value.

Corresponding author: YU Yin-shan, ysyu@aiofm.ac.cn

1. Laboratory for Excimer Laser, Anhui Institute of Optics and Fine Mechanics, the Chinese Academy of Sciences, Hefei 230031, China

Received Date: 2004-06-24

Accepted Date: 2004-09-17

Available Online: 2005-09-25

Abstract: For the laser system performance,the threshold condition is of great significance.The threshold condition of C→A transition low gain,broadband-pulsed excimer laser is closely relative to the pump pulse.Based on the rate equations of four-level laser energy systems,the analytical methods of gain switching and Q-switch are used to study the threshold condition of the(C→A) transition low gain pulsed excimer laser.While the threshold conditions in the different gain duration are given.The analytical results show the threshold condition of the C→A transition low gain excimer laser is fundamentally different from the CW laser in short gain pulse,and depends on time integrated gain coefficient that has to exceed a critical value.

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Reference (9)

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Study of the C→A transition excimer laser threshold condition

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References

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