Circular Polarization and Wavelength Selective Gratings Based on Holographic Cholesteric Liquid Crystal Templates

被引：4
|
作者：
Chin, Hsien-Kuo [1 ]
Kuo, Hui-Ying [2 ,3 ]
Zheng, Yang-Chen [4 ]
Lin, Jia-De [4 ]
Lee, Chia-Rong [4 ]
机构：
[1] Kaohsiung Armed Forces Gen Hosp, Dept Surg, Div Cardiovasc, Kaohsiung 802, Taiwan
[2] Chung Shan Med Univ, Dept Optometry, Taichung 402, Taiwan
[3] Chung Shan Med Univ Hosp, Dept Ophthalmol, Taichung 402, Taiwan
[4] Natl Cheng Kung Univ, Dept Photon, Tainan 701, Taiwan
来源：
ADVANCES IN CONDENSED MATTER PHYSICS | 2018年 / 2018卷
关键词：
POLYMER; EMISSION;
D O I：
10.1155/2018/5384329
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Refilling cholesteric liquid crystal (CLC) template gratings with circular polarization, wavelength selectivity, and dual operation mode are first demonstrated. The gratings with template and nontemplate regions are obtained through the two-beam interfering photo-polymerization, washing-out, and refilling procedure. The refilling CLC has different chiral handedness (left or right) and reflection band (at green and red regions). When the wavelength of a probe beam is within the refilled CLC reflection band of the nontemplate region, the device works as an amplitude grating since the sample in the template and nontemplate regions reflects distinct colour region. In addition, the diffraction intensity of the grating can be electrically controlled. Therefore, this CLC-based device can be potentially used in controllable diffraction elements in optics.
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收藏
页数：8
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