Characteristics of a laser-triggered discharge by high-repetition-rate excimer laser on dc electric field

Michiteru Yamaura; Satoshi Ihara; Saburoh Satoh; Chobei Yamabe

doi:10.1117/12.375111

11 January 2000 Characteristics of a laser-triggered discharge by high-repetition-rate excimer laser on dc electric field

Michiteru Yamaura, Satoshi Ihara, Saburoh Satoh, Chobei Yamabe

Author Affiliations +

Proceedings Volume 3886, High-Power Lasers in Energy Engineering; (2000) https://doi.org/10.1117/12.375111
Event: Advanced High-Power Lasers and Applications, 1999, Osaka, Japan

Abstract

We selected UV lasers which have the advantage of getting a long plasma channel in air and high repetition rate of laser operation. We investigated the fundamental characteristics of laser induced-discharge for different kinds of gases using a kHz order repetition rate UV lasers. Consequently, the 50 percent breakdown voltage in oxygen and dry air except in nitrogen decrease with the burst of frequency with a KrF laser beam. This phenomena seems to be due to the photodetachment of negative ions of oxygen. On the other hand, when nitrogen gas was used, the effect of photodetachment could not be confirmed. For the KrF laser beam irradiations, the 50 percent breakdown voltage was lowest in oxygen gas.

Citation Download Citation

Michiteru Yamaura, Satoshi Ihara, Saburoh Satoh, and Chobei Yamabe "Characteristics of a laser-triggered discharge by high-repetition-rate excimer laser on dc electric field", Proc. SPIE 3886, High-Power Lasers in Energy Engineering, (11 January 2000); https://doi.org/10.1117/12.375111

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