Abstract
We investigate light-induced parametric holographic scattering in photorefractive Ba0.77Ca0.23TiO3 (BCT) crystals illuminated with two coherent pump beams. On a screen behind the crystal we observe different scattering patterns which we attribute to certain phase-matching conditions. This allows for the identification of the involved four-wave mixing processes. We discuss the influence of space charge field limitations and the magnitude of the involved electrooptic tensor elements on the appearance of parametric scattering processes. In this context we compare our results with observations in other crystals.
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