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研究了反射型的LCOS显示器件的相位调制特性 .采用 2× 2的Jones矩阵计算仿真 ,从理论上分析了它的相位调制特性 ,建立了一套测量振幅和相位特性的测试系统 .它采用He Ne激光为光源 ,用干涉仪观察波前相位 ,将LCOS显示器件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 1 0 2 4×768LCOS显示器件的相位调制特性 .理论和实验的一致性说明了在特定的入射、出射偏振光配制下 ,LCOS显示器件可以做纯相位调制器
The phase modulation characteristics of a reflective LCOS display device were investigated. A 2 × 2 Jones matrix simulation was used to analyze the phase modulation characteristics of the LCOS display device. A test system for measuring the amplitude and phase characteristics was established. Ne laser as the light source, observing the wavefront phase with an interferometer, using the LCOS display device as a liquid crystal spatial light modulator, using a computer and a related circuit system to drive and control, and sampling the data with a CCD to test a 1024 × 768LCOS display device Phase Modulation Characteristics The agreement between theory and experiment shows that LCOS display devices can be used as pure phase modulators in a specific incident and outgoing polarization configuration