Dark and bright photovoltaic spatial solitons in photorefractive crystals with positive refractive-index perturbation

被引：24
|
作者：
She, WL [1 ]
Chan, CW
Lee, WK
机构：
[1] Zhongshan Univ, State Key Lab Ultrafast Laser Spect, Guangzhou, Peoples R China
[2] Chinese Univ Hong Kong, Dept Phys & Mat Sci, Hong Kong, Hong Kong, Peoples R China
[3] Chinese Univ Hong Kong, Technol Res Ctr, Shatin, Hong Kong, Peoples R China
来源：
OPTICS LETTERS | 2001年 / 26卷 / 14期
关键词：
D O I：
10.1364/OL.26.001093
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We have demonstrated, for what is believed to be the first time, that in a photorefractive crystal with positive refractive-index perturbation a two-dimensional dark or bright photovoltaic spatial soliton can be formed in the same crystal by a signal beam and a background beam of different wavelengths. We discuss the conditions on the effective Glass constants and the absorption coefficients of the background and signal beams in determining the formation of the spatial soliton. (C) 2001 Optical Society of America.
引用
收藏
页码：1093 / 1095
页数：3
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