Photorefractive Properties Varied With Li Composition in <formula formulatype="inline"> <tex Notation="TeX">$\hbox{LiNbO}_{3}$</tex></formula>:Fe Crystals
oleh: Xunan Shen, Wenbo Yan, Lihong Shi, Yongtao Wang, Fangfang Jia, Huibin Qiao, Guifeng Chen, Hongjian Chen, Aidiao Lin
| Format: | Article |
|---|---|
| Diterbitkan: | IEEE 2012-01-01 |
Deskripsi
LiNbO<sub>3</sub> : 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 LiNbO<sub>3</sub> : 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 LiNbO<sub>3</sub> : 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.