The transient photoconductive effects of PCSS's has been investigated with emphasis on the Dember effect and the effect of some important recombinations on transient photoconductive response of GaAs PCSS's during the action of laser. 本文建立了一个光导开关的瞬态响应模型,对GaAs瞬态光电导效应进行了研究,重点研究了是光作用过程的Dember效应和各种重要的复合机制对GaAs光导开关光电导响应的影响。