High intensity behavior of pyroelectric photorefractive self-focusing in LiNbO3

被引：11
|
作者：
Safioui, Jassem [1 ]
Devaux, Fabrice [2 ]
Huy, Kien Phan [2 ]
Chauvet, Mathieu [2 ]
机构：
[1] Univ Libre Brussels, Serv OPERA Photon, B-1050 Brussels, Belgium
[2] Univ Franche Comte, FEMTO ST, UMR 6174, F-25000 Besancon, France
来源：
OPTICS COMMUNICATIONS | 2013年 / 294卷
关键词：
Photorefractive and Kerr effects; Optical solitons; HIGH LIGHT INTENSITIES; LITHIUM-NIOBATE; SCREENING SOLITONS; WAVE-GUIDES; CONGRUENT; CRYSTALS; FILTER;
D O I：
10.1016/j.optcom.2012.12.069
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The formation of self-confined beams using pyroelectric effect is numerically and experimentally studied in photorefractive LiNbO3. For a given crystal temperature change, the trapped beam width is shown to be less efficient as intensity is increased. Numerical calculations reveal that the induced refractive-index profile varies along propagation for large intensities due to a nonlinear photovoltaic effect. Moreover, it eventually gives beam splitting for intensities greater than a threshold intensity that depends on LiNbO3 composition. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：294 / 298
页数：5
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