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Two-wave mixing in photorefractive BaTiO3:Rh at 1.06 µm in the nanosecond regime

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Abstract

We present two-beam coupling experiments in the nanosecond regime at 1.06 µm, using photorefractive BaTiO3:Rh. The maximum observed exponential gain coefficient is 14.2 cm-1. No intensity-dependent electron–hole competition and no strong saturation of the photoionized charge carriers are observed for intensities of less than 20 MW cm-2. The energy required for recording the photorefractive grating is not significantly different in the nanosecond and the cw regimes.

© 1997 Optical Society of America

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