Abstract

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

© 1997 Optical Society of America

Spatial beam cleanup of a Nd:YAG laser operating at 1.06 µm with two-wave mixing in Rh:BaTiO₃

Arnaud Brignon, Jean-Pierre Huignard, Mark H. Garrett, and Irina Mnushkina
Appl. Opt. 36(30) 7788-7793 (1997)

Self-pumped phase conjugation in rhodium-doped BaTiO₃ with 1.06-µm nanosecond pulses

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Nd:YAG master-oscillator power amplifier with a rhodium-doped BaTiO₃ self-pumped phase-conjugate mirror

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