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中文摘要：
研究了美国BNS公司生产的Modal P256反射型电寻址液晶空间光调制器的相位调制特性和时间响应特性。采用He-Ne激光作光源，建立迈克尔孙干涉光路观察波前相位变化，给出器件的相位调制特性曲线。分析测量了器件的相位响应不一致性和像素间的相位交连。通过测量液晶器件对方波和正弦控制信号的相位响应延迟，分析了液晶空间光调制器（LC-SLM）的时间响应特性。理论分析与实验结果说明：在特定的入射偏振条件下，LC-SLM实现纯相位调制，可用作高分辨力波前校正器件，然而极慢的响应速度和极低的时间带宽限制了它在动态变化波前相差校正中的应用。
英文摘要：
The spatial and temporal characteristics of Modal P256 Liquid-crystal Spatial Light Modulator （LC-SLM） fabricated by Boulder Nonlinear System were investigated. A Michelson interferometer was conducted to test the phase of wave front using the LC-SLM as a reflective mirror. The phases generated by each pixel were different under the same gray value. The phase coupling of pixels was also analyzed. The time properties were evaluated through testing the time response of LC-SLM to square and sine voltages. As a result, the LC-SLM can be used as a high spatial resolution wave front corrector. However, its slow response rate and poor bandwidth restrict the application in compensating wave front aberration dynamically.
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