Surface discharge optical pumping source for XeF blue-green laser

Huang Chao; Liu Jingru; Yu Li; Yi Aiping; An Xiaoxia; Zhu Feng; Shen Yanlong

doi:10.11884/HPLPB201527.081010

Volume 27 Issue 08

Sep. 2015

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Article Navigation > High Power Laser and Particle Beams > 2015 > 27(08): 081010

Li Chunlin, Mao Xiaohui, Li Qing, et al. Development of controller and control system for HL-3 device’s electronic cyclotron long-pulse high-voltage power supply module[J]. High Power Laser and Particle Beams, 2025, 37: 035021. doi: 10.11884/HPLPB202537.240303

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Huang Chao, Liu Jingru, Yu Li, et al. Surface discharge optical pumping source for XeF blue-green laser[J]. High Power Laser and Particle Beams, 2015, 27: 081010. doi: 10.11884/HPLPB201527.081010

Citation:

Huang Chao, Liu Jingru, Yu Li, et al. Surface discharge optical pumping source for XeF blue-green laser[J]. High Power Laser and Particle Beams, 2015, 27: 081010. doi: 10.11884/HPLPB201527.081010

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Surface discharge optical pumping source for XeF blue-green laser

doi: 10.11884/HPLPB201527.081010

1.
State Key Laboratory of Laser Interaction with Matter,Northwest Institute of Nuclear Technology,Xi’an 710024,China

Received Date: 2015-02-11
Rev Recd Date: 2015-06-11
Publish Date: 2015-08-11

Abstract

Abstract

The surface discharge optical pumping source is a key unit of high power XeF blue-green laser with pulse repetition mode. To increase the lifetime of the high power XeF blue-green laser, it is very important to develop a kind of surface discharge optical pumping source which emit strong UV radiation with a long lifespan. In this paper, three kinds of sectioned surface discharge optical pumping sources, which are made from Al2O3 ceramic substrate, BN ceramic substrate and Teflon substrate, are developed respectively, and the electrical, radiation and ablation characteristics of them are examined. Based on discharge current waveform, the equivalent inductance, resistance and energy deposition efficiency of these sources are calculated. UV radiation intensities of the sources are compared by their discharge emission spectrum. Anti-ablative performances of the material are estimated by average line ablation rate which is calculated after 1000 shots. By comparing experimental results from three kinds of surface discharge optical pumping sources, it is found that the best energy deposition efficiency, which is above 82%, is obtained from surface discharge optical pumping source with Al2O3 ceramic substrate, and the UV radiation enhancement is observed in its radiation spectra, with an average line ablation rate less than 0.15 m/shot. The normal working condition is as follows: the charge voltage ranges from 13.5 kV to 26.8 kV, the discharge gap length is 8 cm, and 60%Ar-40% N2 mix gas pressure is 100 kPa. It is believed that Al2O3 ceramic substrate may be utilized to obtain long lifetime XeF blue-green laser.
- XeF blue-green laser,
- optical pumping source,
- surface discharge,
- UV radiation,
- deposition efficiency,
- average line ablation rate

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