叙述了红外GaAs液晶光阀的工作原理和主要构成,并由此建立了红外GaAs液晶光阀一维等效电路模型,根据此模型着重分析光电导层GaAs的厚度对红外液晶光阀的红外调制动态范围、驱动频率和分辨率的影响,给出了部分相关曲线,得到最佳GaAs厚度范围。根据此模型计算出液晶光阀的结构参数,重新设计了液晶光阀并给出了部分实验结果。 The working principle and the main structure of the infrared GaAs liquid crystal light valve are described. Based on this, a one-dimensional equivalent circuit model of the infrared GaAs liquid crystal light valve is established. According to the model, the thickness of the photoconductive GaAs layer on the infrared modulation Dynamic range, driving frequency and resolution, some correlation curves are given, and the optimal GaAs thickness range is obtained. According to this model, the structural parameters of the liquid crystal light valve are calculated, the liquid crystal light valve is redesigned and some experimental results are given.