Abstract
We present two-beam coupling experiments in the nanosecond regime at 1.06 , using photorefractive BaTiO3:Rh. The maximum observed exponential gain coefficient is . No intensity-dependent electron–hole competition and no strong saturation of the photoionized charge carriers are observed for intensities of less than 20 MW . 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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