Optical properties of broad stopband of a chiral smectic liquid crystal at highly oblique incidence

Ryotaro Ozaki; Kazunori Kadowaki; Hiroshi Moritake

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Optical properties of broad stopband of a chiral smectic liquid crystal at highly oblique incidence

机译：手性近晶液晶的宽阻带在高度倾斜入射时的光学性质

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The optical properties of stopbands of a ferroelectric liquid crystal (FLC) in a chiral smectic C phase are investigated experimentally and theoretically. Chiral smectic and cholesteric liquid crystals are regarded as pseudo photonic crystals. They exhibit Bragg reflections corresponding to half- and full-pitch bands. The characteristics of the Bragg reflections at oblique incidence are discussed on the basis of numerical calculations. The full-pitch band of an FLC becomes deeper and wider at highly oblique incidence. Using this characteristic, we demonstrated an FLC stopband with independently tunable wavelength and bandwidth by controlling the temperature and incident angle, respectively.

机译：实验和理论研究了手性近晶C相中铁电液晶（FLC）阻带的光学性质。手性近晶型和胆甾型液晶被认为是伪光子晶体。它们表现出对应于半音带和全音带的布拉格反射。在数值计算的基础上讨论了斜入射时布拉格反射的特性。 FLC的全音带在高度倾斜入射时变得越来越深。利用这一特性，我们通过分别控制温度和入射角，展示了具有独立可调波长和带宽的FLC阻带。

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《Japanese journal of applied physics》 |2014年第1s期|01AE01.1-01AE01.4|共4页
作者
Ryotaro Ozaki; Kazunori Kadowaki; Hiroshi Moritake;
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Department of Electrical and Electronic Engineering and Computer Science, Graduate School of Science and Engineering, Ehime University, Matsuyama 790-8577, Japan;

Department of Electrical and Electronic Engineering and Computer Science, Graduate School of Science and Engineering, Ehime University, Matsuyama 790-8577, Japan;

Department of Electrical and Electronic Engineering, National Defense Academy, Yokosuka, Kanagawa 239-8686, Japan;

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Optical properties of broad stopband of a chiral smectic liquid crystal at highly oblique incidence

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