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Opt Lett. 1992 Jan 1;17(1):67-9.

Measurement of the photorefractive phase shift.

Abstract

We present a method to separate the effects of trap gratings and electro-optic gratings in BaTiO(3) crystals, and we determine the true spatial shift between the electro-optic grating and the optical intensity pattern. At small beam-crossing angles this spatial shift is strongly affected by a photogalvanic current in the crystal.

PMID:
19784232
[PubMed]
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