We report on the photorefractive properties of rhodium doped relaxor Pb(Zn<sub>1/3</sub>Nb<sub>2/3</sub>)O<sub>3</sub>-PbTiO<sub>3</sub> (PZN-PT) crystals. We have grown two Rh doped 0.91PZN-0.09PT single crystals with different Rh concentrations, one is 0.01 wt.% and the other is 0.2 wt.%, with flux solution method. They were cut, polished, and poled along  direction. Two wave mixing experiments are done at the wavelengths 488, 633, 788, and 1064 nm. We obtained the two-wave mixing gain coefficient of 21 cm<sup>-1</sup> at 488 nm, and improvement of the gain at 788 and 1064 nm. We also measured photovoltaic effect and obtained the maximum value of 900 V/cm at 532nm in 0.2 wt.% Rh doped PZN-PT.
© 2005 Optical Society of AmericaPDF Article