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首页> 外文期刊>Applied optics >Formation of anisotropic diffraction gratings in a polymer-dispersed liquid crystal by polarization modulation using a spatial light modulator
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Formation of anisotropic diffraction gratings in a polymer-dispersed liquid crystal by polarization modulation using a spatial light modulator

机译：使用空间光调制器的偏振调制在聚合物分散液晶中形成各向异性衍射光栅

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摘要

Anisotropic diffraction gratings based on a holographic polymer-dispersed liquid crystal (HPDLC) are realized by interferometric exposure using a spatial light modulator (SLM). The SLM is used in the HPDLC grating formation for anisotropic holographic recordings of two-dimensional polarization states for an incident light beam. The diffraction efficiency for P-polarization and the distinctive ratio of diffraction efficiency in P-polarization to that in S-polarization increases with the signal level applied to the SLM. The resulting volume gratings exhibit diffraction efficiency of more than 60percent and a distinctive ratio of diffraction over 100. The microscopic origin of the anisotropic property is investigated by an optical polarizing microscope. The novel characteristics of the anisotropic diffraction properties of HPDLC are applied to an image reconstruction technique.
机译：使用空间光调制器（SLM）通过干涉曝光实现基于全息聚合物分散液晶（HPDLC）的各向异性衍射光栅。 SLM在HPDLC光栅结构中用于入射光束的二维偏振态的各向异性全息记录。 P偏振的衍射效率以及P偏振与S偏振的衍射效率的显着比率随应用于SLM的信号电平而增加。所得到的体光栅显示出超过60％的衍射效率和超过100的独特衍射率。通过光学偏振显微镜研究了各向异性的微观原因。 HPDLC各向异性衍射特性的新颖特征被应用于图像重建技术。

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