Photorefractive lattice surface waves with diffusion nonlinearity

被引:13
|
作者
Zhu, Baogang
Zhang, Tianhao [1 ]
Ma, Huihui
Yan, Zheng
Yang, Xu
Li, Xiao
Shao, Weiwei
Lou, Cibo
Ren, Xiangkui
Xu, Jingjun
Tian, Jianguo
机构
[1] Nankai Univ, Photon Res Ctr, MOE Key Lab Weak Light Nonlinear Photon Mat, Tianjin 300071, Peoples R China
基金
中国国家自然科学基金;
关键词
GAP SOLITONS; 2ND-HARMONIC GENERATION; GUIDE ARRAYS; DISCRETE; MEDIA; MODES;
D O I
10.1364/JOSAB.27.001381
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We introduce what we believe to be a new type of nonlinear surface wave, photorefractive lattice surface wave, which can form at the interface between uniform linear media and periodic optical lattice with nonlocal photorefractive diffusion nonlinearity. This type of surface wave originates not only from the gaps but also from the bands of the optical bandgap structures, which are different from surface lattice solitons and can be classified into three kinds, i.e., band lattice surface wave, gap lattice surface wave, and outside bandgap lattice surface wave. The diffusion nonlinearity ensures the concentration of light energy near the boundary of optical lattice and brings a downward shift of the optical bandgap structure. (C) 2010 Optical Society of America
引用
收藏
页码:1381 / 1387
页数:7
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