激光触发开关同步特性的研究  

Investigation of synchronous characteristic of laser triggered gas switches

作　　者：殷毅[1] 杨杰[1] 钟辉煌[1] 刘金亮[1] 李志强[1] 黄俊[1] 

机构地区：[1]国防科技大学光电科学与工程学院,湖南长沙410073

出　　处：《电工电能新技术》2014年第11期56-60,共5页Advanced Technology of Electrical Engineering and Energy

基　　金：国家自然科学基金资助项目(11075209;11075210)

摘　　要：利用高压电容放电开关试验平台,对两个氮气气体开关在266nm脉冲激光触发作用下开关的工作特性进行了研究。实验结果表明:两个开关的延时、抖动随激光能量的增加、欠压比的增大而减小。激光能量5.5mJ时,每个开关电压抖动时间达到了亚纳秒量级,但是两个开关的延时时间差大于1ns;当激光能量大于8mJ时,两开关导通的延时时间差达到了亚纳秒量级,可认为两开关同步导通。Using the high voltage capacitor discharge gas switch test bed, the synchronous characteristics of two ni- trogen filled laser triggered gas switches are experimentally investigated. The laser pulse with wavelength of 266 nm and pulse width - 10 ns is used to trigger the gas switch. The results show that the delay time and jitter time of the gas switch are both decreased as the laser energy increasing. As the percentage of self-breakdown voltage increas- ing, the delay and jitter time are also decreased. At the laser energy 5.5 mJ, the jitter time of the single gas switch breakdown voltage is at the range of sub-nanosecond, however, the difference of two delay times of the two switches are greater than one nanosecond. At the laser energy of 8.8 m J, the difference of two delay times of the two swit- ches is at the range of sub-nanosecond; therefore the two switches can be regarded as synchronously operated.

关 键 词：延时 抖动 同步特性 激光触发 气体开关 

分 类 号：TN242[电子电信—物理电子学]