Influence of the width of triggering region on output characteristics of GaAs photoconductive semiconductor switch

Chen Hong; Wei Jinhong; Zeng Fanzheng; Jia Chenglin; Fu Zebin; Li Song; Qian Baoliang

doi:10.11884/HPLPB202335.230123

Volume 35 Issue 10

Oct. 2023

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Chen Hong, Wei Jinhong, Zeng Fanzheng, et al. Influence of the width of triggering region on output characteristics of GaAs photoconductive semiconductor switch[J]. High Power Laser and Particle Beams, 2023, 35: 105004. doi: 10.11884/HPLPB202335.230123

Citation:

Chen Hong, Wei Jinhong, Zeng Fanzheng, et al. Influence of the width of triggering region on output characteristics of GaAs photoconductive semiconductor switch[J]. High Power Laser and Particle Beams, 2023, 35: 105004. doi: 10.11884/HPLPB202335.230123

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Influence of the width of triggering region on output characteristics of GaAs photoconductive semiconductor switch

doi: 10.11884/HPLPB202335.230123

College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China

Received Date: 2023-05-11
Accepted Date: 2023-08-30
Rev Recd Date: 2023-08-30

Available Online: 2023-09-13

Publish Date: 2023-10-08

Abstract

Abstract

Based on the theory of multiple avalanche domains, a two-dimensional numerical model for GaAs PCSS with opposed electrode structure is established. The influence of the width of the trigger region on the output characteristics of GaAs PCSS is investigated. Firstly, the switching transient of PCSS is analyzed. The results show that the rapid increase of the carrier concentration and the drastic evolution of the charge domain make PCSS operate in the ultrafast-switching mode. On this basis, this paper studies the influence of the width on the output characteristics of PCSS. The results show that the increase in the width can accelerate the rapid multiplication of carrier concentration and the rapid evolution of avalanche ionization domain, thus shorten the delay time and switching time of PCSS. Further more, the effects of different trigger positions on the delay time and switching time are analyzed. The results show that the delay time under cathode triggering is significantly lower than that under anode triggering, and the switching time is almost unaffected by the trigger position. The above conclusions can provide significant reference for the study on time jitter and synchronization of GaAs PCSS.
- gallium arsenide,
- photoconductive semiconductor switch,
- opposed structure electrode,
- multiple avalanche domains,
- ultrafast-switching mode

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References(16)

References

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