Characterization of optically switchable holographic polymer-dispersed liquid crystal transmission gratings

被引：31

作者：

Su, Y. -C. ^{[1
]}

Chu, C. -C. ^{[2
]}

Chang, W. -T. ^{[3
]}

Hsiao, V. K. S. ^{[1
]}

机构：

[1] Natl Chi Nan Univ, Dept Appl Mat & Optoelect Engn, Nantou 54561, Taiwan

[2] Chung Shan Med Univ, Dept Appl Chem, Taichung 40201, Taiwan

[3] Natl Chi Nan Univ, Dept Appl Chem, Nantou 54561, Taiwan

来源：

OPTICAL MATERIALS | 2011年 / 34卷 / 01期

关键词：

Holographic polymer-dispersed liquid crystal (H-PDLC); Photoisomerization; All-optical switching; Diffraction grating; DIFFRACTION GRATINGS; FILMS;

D O I：

10.1016/j.optmat.2011.08.022

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This study characterizes the all-optical switching effect in holographic polymer-dispersed liquid crystal transmission gratings. The light-induced switching behaviors of these structures are due to the doped azobenzene-derived LC (azo-LC), which changes the refractive index of phase-separated LC within the polymer composite. This study also optimizes the polymer-dispersed liquid crystal formulation containing 15 wt.% azo-LC and 35 wt.% nematic LC to achieve a grating performance with a tunable diffraction efficiency of 78% and a fast switching-on time (0.5 s) with a relatively small light stimulus of 9 mW/cm(2). (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：251 / 255

页数：5

共 50 条

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