Influence of Li/Nb ratios on defect structure and photorefractive properties of Zn: In: Fe: LiNbO3 crystals

被引：13
作者：
Dai, Li [1 ,3 ]
Su, Yan-Qing [1 ]
Wu, Shi-Ping [1 ]
Guo, Jing-Jie [1 ]
Xu, Chao [2 ]
Xu, Yu-Heng [2 ]
机构：
[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
[2] Harbin Inst Technol, Dept Appl Chem, Harbin 150001, Peoples R China
[3] Harbin Univ Sci & Technol, Appl Sci Coll, Harbin 150080, Peoples R China
来源：
OPTICS COMMUNICATIONS | 2011年 / 284卷 / 07期
关键词：
Zn: In: Fe: LiNbO3; Defects structure; Photorefractive properties; OPTICAL-PROPERTIES; GROWTH; RESISTANCE;
D O I：
10.1016/j.optcom.2010.11.077
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A series of Zn: In: Fe: LiNbO3 crystals are grown by the Czochralski technique with various ratios of Li/Nb = 0.94, 1.05, 1.20 and 1.38 in the melt. The Zn, In, Fe, Nb and Li concentrations in the crystals are analyzed by inductively coupled plasma (ICP) spectrometry. The results indicate that with increasing the [Li]/[Nb] ratio in melt, [Li]/[Nb] ratio increases and goes up continuously in the crystal, the segregation coefficients of both Zn and In ions decrease. The absorption spectra measurement and two-wave coupling experiment are employed to study the effect of [Li]/[Nb] ratio on photorefractive properties of Zn: In: Fe: LiNbO3 crystals. It is found that the [Li]/[Nb] ratio increases, the write time is shortened and the photorefractive sensitivity is improved. (C) 2010 Elsevier B.V. All rights reserved.
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页码：1721 / 1725
页数：5
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