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Dual-mode control of light by two-dimensional periodic structures realized in liquid-crystalline composite materials

机译:液晶复合材料中二维周期性结构对光的双模控制

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摘要

We report on the realization of a 2D refractive structure consisting of a polymer-liquid-crystal polymer slice grid.nNematic liquid crystal microdomains are confined inside well-sculptured elliptical cavities; experimental investi-ngation shows that the liquid crystal director lies in the plane of the structure and its orientation follows a preferredndirection. The sample exhibits both an electro-optical and an all-optical response owing to a small percentage ofnphotosensitive azo dye included in the structure. A double external control of the two-dimensional grating effi-nciency can indeed be operated either by an optical pump beam or by the standard technique of applying ansuitable external voltage to the sample. © 2010 Optical Society of America
机译:我们报告了由聚合物-液晶聚合物切片网格组成的二维折射结构的实现。n向列型液晶微区被限制在精心雕刻的椭圆形腔内;实验研究表明,液晶指向矢位于结构平面内,其取向遵循优选方向。由于结构中包含少量非光敏偶氮染料,因此样品同时显示出电光响应和全光响应。实际上,可以通过光泵浦光束或通过向样品施加合适的外部电压的标准技术来操作二维光栅效率的双重外部控制。 ©2010美国眼镜学会

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  • 来源
    《Optics Letters》 |2010年第16期|p.2759-2761|共3页
  • 作者单位

    LICRYL (Liquid Crystals Laboratory, Institute for Chemical Physics Processes-CNR), Centre of Excellencefor the Study of Innovative Functional Materials and Department of Physics University of Calabria,87036 Arcavacata di Rende, Italy;

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