title: Observation of discrete solitons and soliton rotation in optically induced periodic ring lattices.
abstract: We report the first experimental demonstration of ring-shaped photonic lattices by optical induction and the formation of discrete solitons in such radially symmetric lattices. The transition from discrete diffraction to single-channel guidance or nonlinear self-trapping of a probe beam is achieved by fine-tuning the lattice potential or the focusing nonlinearity. In addition to solitons trapped in the lattice center and in different lattice rings, we demonstrate controlled soliton rotation in the Bessel-like ring lattices.
authors.affiliation: Department of Physics and Astronomy, San Francisco State University, San Francisco, California 94132, USA.
authors.forename: Xiaosheng
authors.initials: X
authors.lastname: Wang
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Chen
authors.forename: P G
authors.initials: PG
authors.lastname: Kevrekidis