红外GaAs液晶光阀一维等效电路模型分析

One-dimensional equivalent circuit model analysis for IR GaAs liquid crystal light valve

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 basic structures of IR GaAs liquid crystal light valve are described and the one-dimensional equivalent circuit model for IR GaAs liquid crystal light valve is constructed. According to above model, the influence of thickness of photo semiconductor layer-GaAs on the dynamic modulating range and driving frequency and resolution of IR liquid crystal light valve has been analyzed. The relevant curves and the optimal thickness range of GaAs have been given. The structure parameters of liquid crystal light valve are calculated accordingly and the liquid crystal light valve is redesigned and a part of experimental results is given.