Photorefractivity of Hafnium-doped congruent lithium-niobate crystals

被引：94
|
作者：
Razzari, L
Minzioni, P
Cristiani, I
Degiorgio, V
Kokanyan, EP
机构：
[1] INFM, I-27100 Pavia, Italy
[2] Univ Pavia, I-27100 Pavia, Italy
[3] Natl Acad Sci Armenia, Inst Phys Res, Ashtarak 378410 2, Armenia
来源：
APPLIED PHYSICS LETTERS | 2005年 / 86卷 / 13期
关键词：
D O I：
10.1063/1.1895478
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Transient and steady-state measurements of photoinduced birefringence in Hf-doped congruent lithium-niobate crystals are presented. Through a systematic investigation of crystals with different dopant concentrations, we find that Hf doping induces a progressive decrease of photorefraction up to a threshold concentration of about 4 mol %. Such a decrease is correlated to a corresponding increase in photoconductivity. The interpretation of measurements has to take into account heating effects that may be attributed to nonlinear absorption processes. (C) 2005 American Institute of Physics.
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页码：1 / 3
页数：3
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