Abstract: We report on the first experimental observation of discrete vortex solitons in two-dimensional optically induced photonic lattices. We demonstrate strong stabilization of an optical vortex by the lattice in a self-focusing nonlinear medium and study the generation of the discrete vortices from a broad class of singular beams.

Keywords: biased photorefractive media; incoherent-light; spatial solitons; nonlinear media; beams; instability

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