Optically Controllable Linear-Polarization Rotator Using Chiral-Azobenzene-Doped Liquid Crystals

被引：16

作者：

Liu, Cheng-Kai ^{[1
]}

Chiu, Chian-Yu ^{[1
]}

Morris, Stephen M. ^{[2
]}

Tsai, Min-Cheng ^{[1
]}

Chen, Chii-Chang ^{[1
]}

Cheng, Ko-Ting ^{[1
]}

机构：

[1] Natl Cent Univ, Dept Opt & Photon, Taoyuan 32001, Taiwan

[2] Univ Oxford, Dept Engn Sci, Oxford OX1 3PJ, England

来源：

MATERIALS | 2017年 / 10卷 / 11期

关键词：

liquid crystal; polarization; chiral azobenzene; LIGHT SHUTTERS; REFLECTION; DOPANTS;

D O I：

10.3390/ma10111299

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A linear-polarization rotator based on the optically tunable pitch of chiral-azobenzene-doped liquid crystals (CAdLCs) has been investigated. It is shown that the orientation of linearly polarized (LP) light can be optically tuned using CAdLCs and that the transmitted light possesses a good degree of linear polarization (DoLP). Experimental and simulation (4 x 4 Berreman matrix) results show that the rotation angle is dependent on the pitch as well as the number of turns of the cholesteric LC helix. Some causes to affect the DoLP of the output LP lights during photoisomerization are also discussed. Moreover, a calibration term, (t), is also introduced to elucidate the behavior of the discontinuous change of the CAdLC pitch in a fixed cell thickness.

引用

页数：11

共 35 条

[1] Dynamics of jumpwise temperature pitch variations in planar cholesteric layers for a finite strength of surface anchoring [J].

Belyakov, VA ;

Stewart, IW ;

Osipov, MA .

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS, 2004, 99 (01) :73-82

[2] Temperature pitch variations in planar cholesteric layers: The role of fluctuations and surface anchoring [J].

Belyakov, VA ;

Oswald, P ;

Kats, EI .

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS, 2003, 96 (05) :915-921

[3] Surface anchoring and temperature variations of the pitch in thin cholesteric layers [J].

Belyakov, VA ;

Kats, EI .

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS, 2000, 91 (03) :488-496

[4] An optically stable and tunable quantum dot nanocrystal-embedded cholesteric liquid crystal composite laser [J].

Chen, Lin-Jer ;

Lin, Jia-De ;

Lee, Chia-Rong .

JOURNAL OF MATERIALS CHEMISTRY C, 2014, 2 (22) :4388-4394

[5] Optical addressing in dye-doped cholesteric liquid crystals [J].

Cheng, Ko-Ting ;

Liu, Cheng-Kai ;

Ting, Chi-Lun ;

Fuh, Andy Ying-Guey .

OPTICS COMMUNICATIONS, 2008, 281 (20) :5133-5139

[6] Development and applications of cholesteric liquid crystals [J].

Coates, David .

LIQUID CRYSTALS, 2015, 42 (5-6) :653-665

[7] Liquid-crystal lasers [J].

Coles, Harry ;

Morris, Stephen .

NATURE PHOTONICS, 2010, 4 (10) :676-685

[8]

Duarte F. J., 2015, Tunable Laser Optics, V2

[9] Direct optical switching of bistable cholesteric textures in chiral azobenzene-doped liquid crystals [J].

Fuh, Andy Ying-Guey ;

Wu, Zong-Han ;

Cheng, Ko-Ting ;

Liu, Cheng-Kai ;

Chen, Yuan-Di .

OPTICS EXPRESS, 2013, 21 (19) :21840-21846

[10] Discontinuous shift of lasing wavelength with temperature in cholesteric liquid crystal [J].

Funamoto, K ;

Ozaki, M ;

Yoshino, K .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 2003, 42 (12B) :L1523-L1525

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