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Proceedings Paper

Orientational photorefractive properties in polymer-dispersed liquid crystals with different polymer matrixes
Author(s): Hiroshi Ono; Isao Saito; Nobuhiro Kawatsuki
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Paper Abstract

We report orientational photorefractive effects observed in photoconductive liquid crystals (LCs) contained with three kinds of polymer, i.e., poly(methyl methacrylate) (PMMA), poly(vinyl alcohol) (PVA) and a side-chain liquid crystalline polymer (SLCP1). The morphology of the photorefractive composites depended on the kind of polymer strongly. In both PMMA and PVA cases, LC and polymer were phase-separated and the composite showed memory effects. In SLCP1 case, the phase-separation in the composite dose not occur and the high resolution could be achieved. In this case, the photorefractive Bragg gratings were generated and a high two-beam coupling gain coefficient with a low applied field of 4 V/micrometers was observed.

Paper Details

Date Published: 14 October 1998
PDF: 12 pages
Proc. SPIE 3475, Liquid Crystals II, (14 October 1998); doi: 10.1117/12.326898
Show Author Affiliations
Hiroshi Ono, Nagaoka Univ. of Technology (Japan)
Isao Saito, Nagaoka Univ. of Technology (Japan)
Nobuhiro Kawatsuki, Himeji Institute of Technology (Japan)

Published in SPIE Proceedings Vol. 3475:
Liquid Crystals II
Iam-Choon Khoo, Editor(s)

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