Observation of discrete vortex solitons in optically induced photonic lattices

Phys Rev Lett. 2004 Mar 26;92(12):123903. doi: 10.1103/PhysRevLett.92.123903. Epub 2004 Mar 25.

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.