Electro-optic study of acrylate based holographic polymer dispersed liquid crystals with broad band photosensitivity

被引:5
作者
Harbour, Steven [1 ]
Simonyan, Lifit [1 ]
Galstian, Tigran [1 ]
机构
[1] Univ Laval, Ctr Opt Photon & Laser, Dept Phys Engn Phys & Opt, Quebec City, PQ G1K 7P4, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
physical optics; photo polymerization; phase separation; optical materials; holography; optoelectronics;
D O I
10.1016/j.optcom.2007.04.065
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We describe the electro-optic (EO) modulation of diffraction in holographic polymer dispersed liquid crystals, recently developed for broad band photosensitivity, ranging from visible to near infrared. More than 90% EO modulation achieved for relatively low electric fields confirms the phase separation and formation of liquid crystal sub-micrometer sized droplets in the polymer matrix. Molecular reorientation induced by the applied voltage and a residual electrical current induced heating are at the origin of the EO modulation. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:225 / 227
页数:3
相关论文
共 14 条
[1]  
BOUGURINF, 2002, P SPIE, V4342, P492
[2]   Holographic polymer-dispersed liquid crystals (H-PDLCs) [J].
Bunning, TJ ;
Natarajan, LV ;
Tondiglia, VP ;
Sutherland, RL .
ANNUAL REVIEW OF MATERIALS SCIENCE, 2000, 30 :83-115
[3]  
Bunning TJ, 1997, J POLYM SCI POL PHYS, V35, P2825, DOI 10.1002/(SICI)1099-0488(199712)35:17<2825::AID-POLB7>3.0.CO
[4]  
2-P
[5]   Formation of a grating of submicron nematic layers by photopolymerization of nematic-containing mixtures [J].
Caputo, R ;
Sukhov, AV ;
Umeton, C ;
Ushakov, RF .
JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS, 2000, 91 (06) :1190-1197
[6]  
DOMASH LH, 1998, P SOC PHOTO-OPT INS, V3421, P8
[7]  
Harbour S, 2005, J ADV MATER-COVINA, V37, P28
[8]   Thermal diffractive properties of transmission gratings recorded in near infrared sensitive liquid crystal photopolymerizable materials [J].
Harbour, S ;
Galstian, T ;
Hakobyan, RS .
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 2004, 421 :253-260
[9]   Angular selectivity asymmetry of holograms recorded in near infrared sensitive liquid crystal photopolymerizable materials [J].
Harbour, S ;
Galstian, T ;
Akopyan, RS ;
Galstyan, AV .
OPTICS COMMUNICATIONS, 2004, 238 (4-6) :261-267
[10]   Effect of surfactant on the electro-optical properties of holographic polymer dispersed liquid crystal Bragg gratings [J].
Liu, YJ ;
Sun, XW ;
Dai, HT ;
Liu, JH ;
Xu, KS .
OPTICAL MATERIALS, 2005, 27 (08) :1451-1455