Lifetime of high-power GaAs photoconductive semiconductor switch triggered by laser of different power density

Yi Liu; Wei Wang; Yi Shen; Jinshui Shi; Linwen Zhang; Liansheng Xia

doi:10.1117/12.2065390

3 February 2015 Lifetime of high-power GaAs photoconductive semiconductor switch triggered by laser of different power density

Yi Liu, Wei Wang, Yi Shen, Jinshui Shi, Linwen Zhang, Liansheng Xia

Author Affiliations +

Proceedings Volume 9255, XX International Symposium on High-Power Laser Systems and Applications 2014; 92554G (2015) https://doi.org/10.1117/12.2065390
Event: XX International Symposium on High Power Laser Systems and Applications, 2014, Chengdu, China

Abstract

Conduction modes of GaAs photoconductive semiconductor switch (PCSS) and their conditions are expounded. Laser diode and high-power picosecond Nd:YAG lasers are used as triggers for nonlinear mode and quasi-linear mode respectively in high-power conduction experiment. GaAs PCSS`s failure mechanisms and factors influencing lifetime in both modes are analyzed. It is found that the power density of laser at trigger time determines in which mode GaAs PCSS operates. Low-power laser triggers a nonlinear mode conduction in which GaAs PCSS`s lifetime is only 10³, while high-power laser triggers a quasi-linear mode conduction in which GaAs PCSS`s lifetime is up to 10⁵. According to the findings, the compact high-power pulsed power system based on mass of GaAs PCSSs demands for miniature high-power laser generators.

Citation Download Citation

Yi Liu, Wei Wang, Yi Shen, Jinshui Shi, Linwen Zhang, and Liansheng Xia "Lifetime of high-power GaAs photoconductive semiconductor switch triggered by laser of different power density", Proc. SPIE 9255, XX International Symposium on High-Power Laser Systems and Applications 2014, 92554G (3 February 2015); https://doi.org/10.1117/12.2065390

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