Abstract
The UV photorefractivity of was investigated by beam distortion and two-wave coupling experiments. A sharp decrease of beam distortion was found between Hf concentrations of 2 and , indicating a significant increase of photoconductivity there. The energy-transfer direction of the two-wave coupling and the effect of chemical reduction on the UV photorefractivity reveal that electrons are the carriers responsible for the UV photorefraction. Moreover, dissimilar with highly doped with Mg, Zn, and In, the grating recorded in was found to be nearly stable in the dark but sensitive to red light, which can be attributed to the special location of Fe ions in the crystal lattice.
© 2010 Optical Society of America
Full Article | PDF ArticleMore Like This
Wenbo Yan, Yongfa Kong, Lihong Shi, Hongde Liu, Xiaochun Li, Jingjun Xu, Shaolin Chen, Ling Zhang, Ziheng Huang, Shiguo Liu, and Guangyin Zhang
Opt. Express 14(22) 10898-10906 (2006)
Feifei Xin, Guoquan Zhang, Xinyu Ge, Shiguo Liu, Li Xuan, Yongfa Kong, and Jingjun Xu
Opt. Lett. 36(16) 3163-3165 (2011)
Chao Xu, Zuotao Lei, Chongqiang Zhu, Chunhui Yang, Chunlei Zhang, Ting Sun, Rui Wang, and Yuheng Xu
J. Opt. Soc. Am. B 29(10) 2814-2818 (2012)