首页> 外文会议>Conference on High-Resolution Wavefront Control: Methods, Devices, and Applications IV, Jul 8-9, 2002, Seattle, Washington, USA >Dual Frequency Nematic Liquid Crystal Spatial Light Modulator with Modulation Depth 0-2π and Operation Rate in Hundreds Hz Region
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Dual Frequency Nematic Liquid Crystal Spatial Light Modulator with Modulation Depth 0-2π and Operation Rate in Hundreds Hz Region

机译:调制深度为0-2π且工作频率在数百Hz范围内的双频向列液晶空间光调制器

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摘要

The experimental search of the shape of electrical voltage is presented for controlling the optical phase modulator based on dual frequency nematic liquid crystal. Two basic approaches were tested. One is based on universal relation between two driving frequencies, below and above inversion point, respectively. Another approach uses the combination of pulses of both frequencies, which allow us, at first, to provide the fast transition between chosen retardations and, at second, to hold final retardation for the necessary duration.
机译:提出了电压形状的实验搜索,以控制基于双频向列液晶的光学相位调制器。测试了两种基本方法。一种是基于分别在反转点以下和之上的两个驱动频率之间的通用关系。另一种方法是使用两个频率的脉冲组合,这首先使我们能够在选定的延迟之间提供快速过渡,然后使我们在必要的持续时间内保持最终的延迟。

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