【摘要】 研究了反射式液晶器件(RLCOS)的振幅调制特性.采用2×2的琼斯矩阵计算仿真,从理论上分析了它的振幅调制特性.实验采用He Ne激光为光源,将反射式液晶器件显示器作为液晶空间光调制器,用计算机和相关的电路系统驱动控制,并用CCD采样数据,测试了1024×768反射式液晶器件显示器的振幅调制特性.与未改形光束剖面相比,在特定的入射、出射偏振光配制下,可以用反射式液晶器件显示器来做振幅调制器.更多还原

【Abstract】 The characteristics of amplitude modulation of a reflective liquid crystal on silicon (RLCOS) are discussed in this paper. The 2×2 Jones matrix methods is used to analyze amplitude modulation characteristics. The system is constructed for testing of amplitude and phase, in which He-Ne laser is used as the light source, the wave front amplitude is measured by the interferometer. The RLCOS display device as a mirror is used as a spatial light modulator and its driving circuit is controlled by a computer, digital data are sampled by CCD. The amplitude modulation characteristics of 1024×768 RLCOS display device are gotten. Comparing with the without sharped laser beam profile, the results show that under selected polarization states of input and output, RLCOS displays can be used as amplitude modulator.更多还原