Photochemically induced dynamic grating by means of side chain polymer liquid crystals

被引：37

作者：

Hasegawa, M ^{[1
]}

Yamamoto, T ^{[1
]}

Kanazawa, A ^{[1
]}

Shiono, T ^{[1
]}

Ikeda, T ^{[1
]}

机构：

[1] Tokyo Inst Technol, Resources Utilizat Res Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan

来源：

CHEMISTRY OF MATERIALS | 1999年 / 11卷 / 10期

关键词：

D O I：

10.1021/cm990167v

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：

Dynamic holographic grating by means of photochemical nematic-to-isotropic phase transition has been studied in a polymer liquid crystal containing an azobenzene moiety with strong donor-acceptor substituents in the side chain. Periodical change in the phase structure was caused reversibly by trans-cis photoisomerization and cis-trans thermal back-isomerization of the azobenzene moiety and led to formation of the dynamic grating following change in refractive index on the order of 10(-2). The production and removal of the grating with a narrow fringe spacing of 1.4 mu m was achieved within similar to 150 and similar to 190 ms, respectively. Moreover, the optical switching behavior of the holographic diffraction was observed repeatedly by turning on and off the writing beams.

引用

页码：2764 / 2769

页数：6

共 59 条

[51] Photorefractivity in polymer-stabilized nematic liquid crystals [J].