Abstract

We report observation of the photorefractive effect in functionalized polymer-dispersed liquid crystals. The photoconductive properties are provided by the polymer matrix, and the field-dependent refractive-index changes are generated by the dispersed nematic liquid-crystal droplets. A high diffraction efficiency (8%) and a high refractive-index modulation amplitude (Δ<i>n</i> = 2 × 10<sup>-3</sup>) are obtained in 53- µm-thick samples with an applied field of 22 V/µm.

© 1997 Optical Society of America

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