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Observation of surface gap solitons in semi-infinite waveguide arrays

Rosberg, Christian; Neshev, Dragomir; Krolikowski, Wieslaw; Mitchell, Arnan; Vicencio, Rodrigo; Molina, Mario I; Kivshar, Yuri


We report on the observation of surface gap solitons found to exist at the interface between uniform and periodic dielectric media with defocusing nonlinearity. We demonstrate strong self-trapping at the edge of a LiNbO3 waveguide array and the formation of staggered surface solitons with propagation constant inside the first photonic band gap. We study the crossover between linear repulsion and nonlinear attraction at the surface, revealing the mechanism of nonlinearity-mediated stabilization...[Show more]

CollectionsANU Research Publications
Date published: 2006-08-23
Type: Journal article
Source: Physical Review Letters
DOI: 10.1103/PhysRevLett.97.083901


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