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Recording of a stationary photorefractive grating in an external ac field by rapidly modulated beams

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Abstract

A mechanism for recording a static hologram in a photorefractive crystal in an externally applied ac field is investigated. One beam is rapidly modulated, and the interference pattern is moving. The frequency of modulation coincides with the frequency of the externally applied ac field and strongly exceeds the inverse buildup time. Both phase and amplitude modulations are investigated theoretically and experimentally. The experiment was performed in a Bi12TiO20 crystal.

© 1993 Optical Society of America

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