Microscopic mechanism of suppressing photorefraction in LiNbO3:Mg,Fe crystals

被引：20
|
作者：
Liu, JJ
Zhang, WL
Zhang, GY
机构：
[1] Department of Physics, Nankai University, Tianjin
来源：
SOLID STATE COMMUNICATIONS | 1996年 / 98卷 / 06期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
optical properties; light absorption and reflection;
D O I：
10.1016/0038-1098(96)00093-2
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The infrared absorption spectra of OH- in LiNbO3:Mg,Fe crystals have been investigated. It is shown that near the Mg concentration threshold the OH. absorption bands successively shift from 3484 cm(-1) to 2504 cm(-1) and 3535 cm(-1). The intensity of the 3504 cm(-1) band firstly increases to a maximum value, then decreases as the Mg content increases. This result contributed to the substitution of Fe ions into Nb sites due to Mg-doping in crystal. The site alteration of Fe ions from the Li sites to Nb sites is the origin of increasing the resistance against optical damage.
引用
收藏
页码：523 / 526
页数：4
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