Observation of multivortex solitons in photonic lattices.
We report on the first observation of topologically stable spatially localized multivortex solitons generated in optically induced hexagonal photonic lattices. We demonstrate that topological stabilization of such nonlinear localized states can be achieved through self-trapping of truncated two-dimensional Bloch waves and confirm our experimental results by numerical simulations of the beam propagation in weakly deformed lattice potentials in anisotropic photorefractive media.
Terhalle
Bernd
B
Nonlinear Physics Center and Laser Physics Center, Research School of Physical Sciences and Engineering, Australian National University, Canberra, ACT 0200, Australia.
Richter
Tobias
T
Desyatnikov
Anton S
AS
Neshev
Dragomir N
DN
Krolikowski
Wieslaw
W
Kaiser
Friedemann
F
Denz
Cornelia
C
Kivshar
Yuri S
YS