Abstract

The photo-responsive liquid crystals (LCs) close to the isotropic condition shows very large optical nonlinearity lasting for tens/hundreds of milliseconds after a pulse light illumination due to the flow-induced reorientation of liquid crystals. By optimizing the temperature and the pump light intensity, we succeeded to demonstrate various refractive index patterns due to this optical nonlinearity with a pattern illumination under a microscope. We demonstrated a rewritable hologram by using a computer generated hologram pattern on a photo-responsive LC.

中文翻译：

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利用光致液晶的光学非线性论证可重写全息图

摘要

接近各向同性条件的光响应液晶（LC）在脉冲光照射后由于流动引起的液晶重新取向而显示出很大的光学非线性，持续了数十/几百毫秒。通过优化温度和泵浦光强度，由于这种光学非线性，我们在显微镜下通过图案照明成功地展示了各种折射率图案。我们通过在光响应LC上使用计算机生成的全息图图案演示了可重写的全息图。