title: Necklacelike solitons in optically induced photonic lattices.
abstract: We report the first observation of stationary necklacelike solitons. Such necklace structures were realized when a high-order vortex beam was launched appropriately into a two-dimensional optically induced photonic lattice. Our theoretical results obtained with continuous and discrete models show that the necklace solitons resulting from a charge-4 vortex have a pi phase difference between adjacent "pearls" and are formed in an octagon shape. Their stability region is identified.
authors.affiliation: Department of Mathematics and Statistics, University of Vermont, Burlington, VT 05401, USA.
authors.forename: J
authors.initials: J
authors.lastname: Yang
authors.forename: I
authors.initials: I
authors.lastname: Makasyuk
authors.forename: P G
authors.initials: PG
authors.lastname: Kevrekidis
authors.forename: H
authors.initials: H
authors.lastname: Martin
authors.forename: B A
authors.initials: BA
authors.lastname: Malomed
authors.forename: D J
authors.initials: DJ
authors.lastname: Frantzeskakis
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Chen