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We demonstrate an induction technique to generate honeycomb photonic lattices with equal and unequal sites in each unit-cell. We show light localization as nonlinear solitons and linear Shockley surface states in lattices with unequal sites.
We study symmetry-breaking of the multi-vortex Bloch modes in optically induced hexagonal lattices. Such symmetry-breaking results from either exciting with an anisotropic beam or inducing an anisotropic photonic lattice.
We demonstrate both theoretically and experimentally that a nonlinear beam can be reflected by a negative defect in photonic lattices if the incident angle is below a threshold. This phenomenon can be used to control beam propagation in photonic lattices.
We report the first demonstration of 2D quasi-localized solitons near a saddle point of diffraction surfaces. These solitons arise from a balance between saddle-shaped diffraction and hybrid nonlinearity in optically-induced ionic-type photonic lattices.
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