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Electrical fixing of photorefractive holograms in Sr0.75Ba0.25Nb2O6

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Abstract

Photorefractive holograms stored in Sr0.75Ba0.25Nb2O6 crystals are electrically fixed at room temperature. The fixed holograms can be read out directly or after a positive-voltage pulse is applied that can dramatically enhance the diffraction efficiency. Single gratings as well as images are recorded and fixed.

© 1993 Optical Society of America

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