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Abstract: We address the properties of surface solitons supported by optical latticesimprinted in photorefractive media with asymmetric diffusion nonlinearity. Suchsolitons exist only in finite gaps of lattice spectrum. In contrast tolatticeless geometries, where surface waves exist only when nonlinearitydeflects light towards the material surface, the surface lattice solitons existin settings where diffusion would cause beam bending against the surface.



Autor: Yaroslav V. Kartashov, Victor A. Vysloukh, Lluis Torner

Fuente: https://arxiv.org/







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