Nonvolatile photorefractive properties in triply doped stoichiometric Mg:Fe:Mn:LiTaO_3 crystals  

作　　者：孙婷 张晓东 孙亮 王锐 

机构地区：[1]Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001, China [2]School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China [3]School of Chemical Engineering & Technology, Harbin Institute of Technology, Harbin 150001, China [4]School of Physics and Electronic Engineering, Yibin University, Yibin 644000, China

出　　处：《Chinese Physics B》2014年第1期245-249,共5页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China （Grant No. 51202045）, the Postdoctoral Science Foundation of Heilongjiang Province, China, and the Fundamental Research Funds for the Central Universities of Ministry of Education of China （Grant No. HIT. NSRIF. 2013004）.

摘　　要：We have grown triply doped Mg:Fe:Mn:LiTaO3 crystals with near stoichiometry using the top seeded solution growth technique. The defect structure was investigated by infrared absorption spectra and Curie temperature. Using a blue laser as the source, excellent photorefractive properties were obtained. Nonvolatile holographic storage properties were investigated using the dual wavelength technique. We got a very high fixed diffraction efficiency and nonvolatile holographic storage sensitivity. The blue light has more than enough energy to excite holes of deep(Mn) and shallow(Fe) trap centers with the same phase, which enhance dramatically the blue photorefractive properties and the nonvolatile holographic storage. Mg2+ ion is no longer damage resistant at blue laser, but enhances photorefractive characteristics.

关 键 词：photorefractive material LiTaO3crystal nonvolatile holography blue photorefraction 

分 类 号：O[理学]