Influence of heat and UV light on the coercive field of lithium niobate crystals

被引：12
|
作者：
Steigerwald, H. [1 ]
von Cube, F. [1 ]
Luedtke, F. [1 ]
Dierolf, V. [2 ]
Buse, K. [1 ]
机构：
[1] Univ Bonn, Inst Phys, D-53115 Bonn, Germany
[2] Lehigh Univ, Dept Phys, Bethlehem, PA 18015 USA
来源：
APPLIED PHYSICS B-LASERS AND OPTICS | 2010年 / 101卷 / 03期
基金：
美国国家科学基金会;
关键词：
LINBO3; CRYSTALS; ULTRAVIOLET-LIGHT; CONGRUENT LINBO3; DOMAIN INVERSION; LITAO3; NONSTOICHIOMETRY; FERROELECTRICS; REVERSAL; KINETICS; DEFECT;
D O I：
10.1007/s00340-010-4209-1
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Heating and UV illumination reduce the coercive field of lithium niobate crystals. It is found that both effects add up, leading to the conclusion that the underlying mechanisms are different. We present arguments that heating leads to an increased ionic conductivity that changes defect structures which pin domain walls, while UV illumination enables electrical screening of the pinning defects by photo-excited electrons.
引用
收藏
页码：535 / 539
页数：5
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