基于光导开关的激光二极管触发三电极气体开关研究  

LD triggered three-electrode gas switch based on photoconductive semiconductor

作　　者：付佳斌[1,2] 王凌云 何泱[1] 冯传均[1] 谢卫平 Fu Jiabin;Wang Lingyun;He Yang;Feng Chuanjun;Xie Weiping(Key Laboratory of Pulse Power,Institute of Fluid Physics,CAEP,P.O.Box 919-108,Mianyang 621900,China;Graduate School of China Academy of Engineering Physics,Beijing 100088,China)

机构地区：[1]中国工程物理研究院流体物理研究所脉冲功率科学与技术重点实验室,四川绵阳621900 [2]中国工程物理研究院研究生院,北京100088

出　　处：《强激光与粒子束》2022年第9期44-49,共6页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(52007176);国防技术基础科研项目(JSJL2018212A001)。

摘　　要：为实现激光二极管对气体开关的触发,采用从主回路开关两侧取电的基于光导开关一体化激光二极管触发气体开关结构,并对基于光导开关一体化激光二极管触发三电极气体开关进行了初步实验,实现了激光二极管输出能量83μJ条件下40 kV/8 kA三电极气体开关的可靠触发,证明了技术可行性。但实验中的实测光导开关的工作寿命仅约数百次。To trigger the gas switch with one fiber,a kind of LD(laser diode)triggered three--electrode gas switch based on photoconductive semiconductor without trigger charger source is presented in this paper.The principle of this switch is that a GaAs PCSS,which is triggered by LD,is used to control the trigger pulse generation of the trigger capacitor discharge circuit(CDC).The capacitor in CDC is charged with the energy of the main circuit directly.As a result,this switch can work without trigger charge power source,which means this switch can be made more compact compared with traditional electrical trigger switch.A prototype designed for three-electrode gas switch working under 40 kV/8 kA and PCSS triggered with 83μJ laser energy is described in this paper in detail.The experimental result proves the feasibility of the switch.The experimental result also shows the life of the photoconductive semiconductor is just several hundred shots.The life of the photoconductive semiconductor will be improved in next phase of our research.

关 键 词：气体开关 激光二极管触发 光导开关 工作寿命 

分 类 号：TM89[电气工程—高电压与绝缘技术]