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Moving grating and dc external field in photorefractive GaP at 633 nm

Jian Ma, Yoshinao Taketomi, Yeshaiahu Fainman, Joseph E. Ford, Sing H. Lee, and Ken’ichi Chino

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Abstract

We demonstrate that the photorefractive effect in GaP crystal at 633 nm can be enhanced using an externally applied dc field and a moving grating. A two-beam coupling gain coefficient of 2.5 cm−1 and a steady-state phase-conjugate reflectivity of 1.9% were obtained.

© 1991 Optical Society of America

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