Abstract

Incoherent-to-coherent conversion by use of the photorefractive beam-fanning effect and amplification by two-wave coupling have been demonstrated experimentally in a photorefractive Ba1-xSrxTiO3 crystal. The converted coherent image is amplified by 60×. The resolution of the amplified coherent image is ∼28 line pairs/mm. A notable advantage of the method is that incoherent-to-coherent conversion and coherence amplification of the converted coherent image are realized simultaneously in a photorefractive crystal.

© 2001 Optical Society of America

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