The photorefractive effect in a nominally undoped single crystal is measured. We report what is, to our knowledge, the first observation of the photorefractive effect in Pb-based relaxor ferroelectric crystals. The crystal is grown by the flux solution method. Then it is cut into a piece and electrically poled along the  direction. The coupling constant of the two-wave mixing is , and the normalized time constant under illumination is 12 s at a wavelength of 476 nm. The effective trap density is calculated as from the Debye screening length under the assumption of Kukhtarev’s band-transport model. The dominant carrier is identified to be holes from the direction of two-wave mixing energy transfer.
© 2003 Optical Society of AmericaFull Article | PDF Article
Claire Gu, John Hong, and Pochi Yeh
J. Opt. Soc. Am. B 9(8) 1473-1479 (1992)
R. S. Rana, D. D. Nolte, R. Steldt, and E. M. Monberg
J. Opt. Soc. Am. B 9(9) 1614-1625 (1992)
Li-Kuo Dai, Claire Gu, and Pochi Yeh
J. Opt. Soc. Am. B 9(9) 1693-1697 (1992)