Abstract
We report on the fixing of photorefractive volume holograms in potassium lithium tantalate niobate with ionic gratings and also with ferroelectric domain-reversed gratings. A diffraction efficiency of 55% is obtained with domain reversal in a 2-mm-thick ferroelectric phase K1−yLiyTa1−xNbxO3 crystal doped with Co, V, and Ti. We measured the decay rate of the domain gratings and also of the initial electron gratings and ion gratings. The domain grating decay agrees with Vogel–Fulcher fits. The activation energies for ionic and electronic conductivity are 0.76 and 0.12 eV, respectively.
© 1996 Optical Society of America
Full Article | PDF ArticleMore Like This
Victor Leyva, Doruk Engin, Xiaolin Tong, Min Tong, Amnon Yariv, and Aharon Agranat
Opt. Lett. 20(11) 1319-1321 (1995)
Victor Leyva, Aharon Agranat, and Amnon Yariv
Opt. Lett. 16(8) 554-556 (1991)
Tadayuki Imai, Shogo Yagi, and Hiroki Yamazaki
J. Opt. Soc. Am. B 13(11) 2524-2529 (1996)