Photorefractive polymer materials

Henk J. Bolink; Victor V. Krasnikov; George G. Malliaras; Georges Hadziioannou

doi:10.1117/12.165266

16 December 1993 Photorefractive polymer materials

Henk J. Bolink, Victor V. Krasnikov, George G. Malliaras, Georges Hadziioannou

Author Affiliations +

Proceedings Volume 2025, Nonlinear Optical Properties of Organic Materials VI; (1993) https://doi.org/10.1117/12.165266
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

Photorefractivity, or reversible photoinduced refractive index change, was first observed about twenty-five years ago in inorganic crystals. The photorefractive effect involves generation, transport and trapping of charges and a change of the refractive index through the electro-optic effect. We have synthesized a photorefractive crosslinked polymer material in which the active components, derivatives of diethylaminobenzaldehyde diphenylhydrazone and para- nitroaniline, are chemically linked into the polyurethane network. During the crosslinking of the polyurethane the para-nitroaniline groups were aligned (poled) by an external electric field, which resulted in a non-centrosymmetric polymer material. This material was shown to be photorefractive by the two beam coupling experiment, without the application of an external electric field.

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Henk J. Bolink, Victor V. Krasnikov, George G. Malliaras, and Georges Hadziioannou "Photorefractive polymer materials", Proc. SPIE 2025, Nonlinear Optical Properties of Organic Materials VI, (16 December 1993); https://doi.org/10.1117/12.165266

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