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Opt Lett. 1991 May 15;16(10):750-1.

Image subtraction using fixed holograms in photorefractive Bi(12)TiO(20) crystals.

Abstract

A simple method for image subtraction by two-wave mixing in photorefractive cubic Bi(12)TiO(20) crystals is proposed and demonstrated. Intensity inversion and edge enhancement are also achieved.

PMID:
19774059
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