激光技术2017，Vol.41Issue(1)：61-64,4.DOI:10.7510/jgjs.issn.1001-3806.2017.01.013
CO2激光诱导大气放电特性的研究
Characteristics of air discharges triggered by CO2 laser
邓兴福 1王新兵 1左都罗1
作者信息
- 1. 华中科技大学 武汉光电国家实验室,武汉430074
- 折叠
摘要
Abstract
In order to investigate the characteristics of pulsed CO2 laser triggering discharge, a high voltage capacitance discharge experimental platform was set up by a pair of hemisphere graphite electrode with 10mm radius and 8mm gap. The real-time data of discharge voltage and current were obtained. Discharge voltage and discharge current were fitted by two-order oscillation circuit model. The impedance of laser induced discharge plasma was obtained. And the discharge time, discharge delay and jitter data were collected. The results show that the impedance of laser trigger discharge plasma is very little, and of 1Ω~2Ω. The fitted plasma impedance slightly decreases with the increase of laser energy, discharge voltage and capacitance. The delay varies from 2μs to 10μs with the change of experimental condition. Delay and delay jitter decrease with the increase of laser energy and discharge voltage. Discharge capacitance has no obvious effects on delay and delay jitter. Laser pulse and high voltage with high stability are helpful for the stability of laser triggered discharges.关键词
激光光学/CO2激光/脉冲放电/等离子体/空气Key words
laser optics/CO2 laser/pulse discharge/plasma/air分类
数理科学引用本文复制引用
邓兴福,王新兵,左都罗..CO2激光诱导大气放电特性的研究[J].激光技术,2017,41(1):61-64,4.
