Mirror electrode for laser initiated discharge channels
作者:
R. M. Gilgenbach,
L. D. Horton,
期刊:
Review of Scientific Instruments
(AIP Available online 1984)
卷期:
Volume 55,
issue 4
页码: 503-507
ISSN:0034-6748
年代: 1984
DOI:10.1063/1.1137780
出版商: AIP
数据来源: AIP
摘要:
A reflecting waxicon has been demonstrated to generate long, smooth, CO2laser induced breakdown plasmas in atmospheric pressure gases including nitrogen, argon, and air. A waxicon or compound axicon is a mirror consisting of two concentric cones which form aW‐shaped cross section. The protruding central cone of the waxicon also functions as an electrode for laser guided electrical discharges. In contrast to conventional mirrors, this waxicon design produces nearly uniform laser intensity in a fixed length of breakdown plasma. The length of the laser induced breakdown plasma has been measured as a function of incident laser power and agrees well with predictions of a ray tracing code.
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