Abstract
We determine several photorefractive properties of undoped, Cr-doped, and Cu-doped (KyNa1–y)2z, (SrxBa1–x)1–z Nb2O6 (KNSBN) crystals by means of two-beam coupling measurements. An elemental analysis of the crystals to determine their compositions and impurities is also performed. It is found that two-beam coupling gain of the Cr-doped KNSBN at 514.5 nm is enhanced by ~10 times that of the undoped KNSBN, while its response speed remains substantially unchanged. Longer-wavelength photorefractivity is also observed in the Cr-doped KNSBN. Quasi-periodic oscillations of the probe-beam intensity in the two-beam coupling experiment are observed in the Cu-doped KNSBN.
© 1993 Optical Society of America
Full Article | PDF ArticleMore Like This
Yasuo Tomita and Shun-suke Matsushima
J. Opt. Soc. Am. B 16(1) 111-116 (1999)
Bao-Lai Liang, Zhao-Qi Wang, Guo-Guang Mu, Jiu-Hong Guan, and Colin M. Cartwright
Appl. Opt. 38(26) 5552-5555 (1999)
Fei Lu, Ming-Qi Meng, Ke-Ming Wang, Xiang-Dong Liu, Huan-Chu Chen, and Ding-Yu Shen
Opt. Lett. 22(3) 163-165 (1997)