强激光与粒子束2025，Vol.37Issue(5)：112-118,7.DOI:10.11884/HPLPB202537.240358
一种基于钒掺 4H-SiC光导开关的电磁振荡现象
A new electromagnetic oscillation phenomenon on vanadium-compensation semi-insulating 4H-SiC PCSS
摘要
Abstract
Constructing a photoconductive semiconductor switch(PCSS)-metal coil structure,we discovered a new phenomenon of electromagnetic oscillation in vanadium-compensation semi-insulating(VCSI)PCSS.Here the PCSS responds to laser pulse and high-voltage signal while the metal coil generates an oscillating voltage pulse envelope signal.The generation of this oscillating signal is not related to the input bias voltage of the PCSS,the pulse circuit components,or the electrode structure of the PCSS,rather it is related to the output characteristic of the PCSS.This physical phenomenon can be explained using the current surge model in photoconducting antenna.Preparing ohmic contact electrode on the silicon carbide material forms the PCSS,which generates a large number of photogenerated carriers when ultra-fast laser pulses irradiate the surface of the material and Simultaneously applies a bias voltage signal between the electrode.At this time inside the PCSS the electric field causes the transient current,radiating electromagnetic wave to the metal coil to generate oscillating signal.关键词
钒掺 4H-SiC/光导开关/电磁振荡/电流瞬冲模型Key words
VCSI 4H-SiC/PCSS/electromagnetic oscillation/current surge model分类
信息技术与安全科学引用本文复制引用
林舟洋,郭辉,陈志鹏,孙倩,郑重,许坤,蒋树庆,张玉明,王雨田,胡彦飞..一种基于钒掺 4H-SiC光导开关的电磁振荡现象[J].强激光与粒子束,2025,37(5):112-118,7.基金项目
supported by Major Projects of Shanxi Province(202101030201001) （202101030201001）
