Liquid crystal light valves (LCLV) are optically addressable spatial light modulators that allow controlling the phase and amplitude properties of optical beams. We show that sub-milliseconds phase and amplitude modulations can be obtained when operating the LCLV in the transient dynamic mode by setting the working point close to the saturation of the response. Thanks to the large birefringence of the liquid crystals, this condition provides enough phase shifts to respond to the needs of several methods for optical measurement, dynamic holography, interferometry, and imaging through phase disturbing media, while providing kilohertz (kHz) speed. These values of response times also allow foreseeing applications, for example, in biophotonics, and for monitoring the environment.

中文翻译：

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瞬态动态模式下具有液晶光阀的 kHz 速度光致相位光栅

液晶光阀 (LCLV) 是可光学寻址的空间光调制器，可以控制光束的相位和幅度特性。我们表明，通过将工作点设置为接近响应的饱和度，在瞬态动态模式下操作 LCLV 时可以获得亚毫秒级的相位和幅度调制。由于液晶的双折射很大，这种条件提供了足够的相移来满足光学测量、动态全息、干涉测量和通过相位干扰介质成像的多种方法的需求，同时提供千赫 (kHz) 速度。这些响应时间值还允许预见应用，例如，在生物光子学和环境监测中。