title: Observation of nonlinear self-trapping in triangular photonic lattices.
abstract: We experimentally study light self-trapping in triangular photonic lattices induced optically in nonlinear photorefractive crystals. We observe the formation of two-dimensional discrete and gap spatial solitons originating from the first and second bands of the linear transmission spectrum.
authors.affiliation: Nonlinear Physics Centre and Laser Physics Centre, Research School of Physical Sciences and Engineering, Australian National University, Canberra, ACT 0200, Australia. crr124@rsphysse.anu.edu.au
authors.forename: Christian R
authors.initials: CR
authors.lastname: Rosberg
authors.forename: Dragomir N
authors.initials: DN
authors.lastname: Neshev
authors.forename: Andrey A
authors.initials: AA
authors.lastname: Sukhorukov
authors.forename: Wieslaw
authors.initials: W
authors.lastname: Krolikowski
authors.forename: Yuri S
authors.initials: YS
authors.lastname: Kivshar