Surface gap solitons

被引:225
作者
Kartashov, YV [1 ]
Vysloukh, VA
Torner, L
机构
[1] ICFO, Inst Ciencies Foton, Castelldefels 08860, Barcelona, Spain
[2] Univ Politecn Cataluna, Castelldefels 08860, Barcelona, Spain
关键词
D O I
10.1103/PhysRevLett.96.073901
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We put forward the existence of surface gap solitons at the interface between uniform media and an optical lattice with defocusing nonlinearity. Such new type of solitons forms when the incident and reflected waves at the interface of the lattice experience Bragg scattering, and feature a combination of the unique properties of both surface waves and gap solitons. We discover that gap surface solitons exist only when the lattice depth exceeds a threshold value, that they can be made completely stable, and that they can form stable bound states.
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页数:4
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