Orientational photorefractive properties in polymer-dispersed liquid crystals with different polymer matrixes

Hiroshi Ono; Isao Saito; Nobuhiro Kawatsuki

doi:10.1117/12.326898

14 October 1998 Orientational photorefractive properties in polymer-dispersed liquid crystals with different polymer matrixes

Hiroshi Ono, Isao Saito, Nobuhiro Kawatsuki

Author Affiliations +

Proceedings Volume 3475, Liquid Crystals II; (1998) https://doi.org/10.1117/12.326898
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

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.

Citation Download Citation

Hiroshi Ono, Isao Saito, and Nobuhiro Kawatsuki "Orientational photorefractive properties in polymer-dispersed liquid crystals with different polymer matrixes", Proc. SPIE 3475, Liquid Crystals II, (14 October 1998); https://doi.org/10.1117/12.326898

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