Abstract

The readout diffraction efficiency of a photorefractive hologram stored in single-crystal strontium barium niobate (SBN) is shown to depend strongly on a uniform electric field applied along the c axis. The effect is observed in the vicinity of the diffuse ferroelectric phase transition that occurs near room temperature for SBN:75. Measurements of the nonlinear electro-optic and dielectric properties of SBN verify a simple model describing the origin of the field-dependent diffraction.

© 1992 Optical Society of America

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