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本文介绍了用光导开关和微带线结构产生电脉冲的实验装置,研究了激光能量和偏置电压对光导开关输出超短电脉冲的影响和三种尺寸光导开关的特性,测得了一种低掺杂Cr:GaAs材料的载流子寿命约为1.8ns,显示了这种装置用作高速光探测器的可能性。
In this paper, we introduce the experimental setup for generating electrical pulses by using photoconductive switches and microstrip lines. The effects of laser energy and bias voltage on the ultrashort electrical pulses output by the photoconductive switches and the characteristics of the photoconductive switches of the three sizes are investigated. The doping Cr: GaAs material has a carrier lifetime of about 1.8 ns, indicating the possibility of using this device as a high-speed photodetector.