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首页> 外文期刊>Molecular Crystals and Liquid Crystals >Phase Modulator Behavior of a Wedge-Shaped POLICRYPS Diffraction Grating
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Phase Modulator Behavior of a Wedge-Shaped POLICRYPS Diffraction Grating

机译：楔形POLICRYPS衍射光栅的相位调制器行为

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摘要

Experimental characterization of a switchable wedge-shaped holographic grating involved as a tunable phase retarder is reported. The structure is made of polymer slices alternated to films of well aligned Liquid Crystals (POLICRYPS). The sample shows a birefringence that depends on the anisotropy of the composite liquid crystalline material and on the geometrical cell parameters. The phase retardation introduced by the structure on the impinging probe light can be finely tuned by varying the amplitude of the externally applied electric field or by spatially shifting the probed area on the sample. The quarter wave plate condition for a He-Ne laser probe has been obtained confirming the possible application of the structure as an achromatic phase retarder.
机译：报道了作为可调相位延迟器的可切换楔形全息光栅的实验特性。该结构由聚合物切片制成，该聚合物切片与取向良好的液晶（POLICRYPS）薄膜交替排列。该样品显示出双折射，该双折射取决于复合液晶材料的各向异性和几何晶胞参数。通过改变外部施加电场的幅度或通过空间移动样本上的探测区域，可以微调由结构在入射探测光上引入的相位延迟。已经获得了用于He-Ne激光探头的四分之一波片条件，确认了该结构作为消色差相位延迟器的可能应用。

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