Open AccessPhotorefractive Properties Varied With Li Composition in $\hbox{LiNbO}_{3}$ :Fe Crystals
Author(s) -
Xunan Shen,
Wenbo Yan,
Lihong Shi,
Yongtao Wang,
Fangfang Jia,
Huibin Qiao,
Guifeng Chen,
Hongjian Chen,
Aidiao Lin
Publication year - 2012
Publication title -
ieee photonics journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.725
H-Index - 73
eISSN - 1943-0655
pISSN - 1943-0647
DOI - 10.1109/jphot.2012.2219041
Subject(s) - engineered materials, dielectrics and plasmas , photonics and electrooptics
LiNbO3 : Fe crystals with different Li compositions were prepared in this paper. Both holographic storage and photo-induced light scattering experiments were carried out on these crystals. Our results showed that, with the increase of the Li composition in LiNbO3 : Fe, the response time of the material was shortened largely, while the photoinduced light scattering in the crystals was suppressed significantly. These improvements of the photorefractive properties of LiNbO3 : Fe were attributed to the change of polaronic system in the material. In addition, the rapid change of the photo-induced light scattering with the Li composition was found between 48.9 and 49.3 mol%. It was explained by the threshold effect of photo-induced light scattering with respect to the photovoltaic field.