title: Observation of discrete vortex solitons in optically induced photonic lattices.
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.
authors.affiliation: Nonlinear Physics Group, Research School of Physical Sciences and Engineering, Australian National University, Canberra ACT 0200, Australia.
authors.forename: Dragomir N
authors.initials: DN
authors.lastname: Neshev
authors.forename: Tristram J
authors.initials: TJ
authors.lastname: Alexander
authors.forename: Elena A
authors.initials: EA
authors.lastname: Ostrovskaya
authors.forename: Yuri S
authors.initials: YS
authors.lastname: Kivshar
authors.forename: Hector
authors.initials: H
authors.lastname: Martin
authors.forename: Igor
authors.initials: I
authors.lastname: Makasyuk
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Chen