Two-dimensional self-trapped nonlinear photonic lattices.
We predict theoretically and generate in a photorefractive crystal two-dimensional self-trapped periodic waves of different symmetries, including vortex lattices-patterns of phase dislocations with internal energy flows. We demonstrate that these nonlinear waves exist even with anisotropic nonlocal nonlinearity when the optically-induced periodic refractive index becomes highly anisotropic, and it depends on the orientation of the two-dimensional lattice relative to the crystallographic c-axis.
Desyatnikov
Anton S
AS
Sagemerten
Nina
N
Fischer
Robert
R
Terhalle
Bernd
B
Träger
Denis
D
Neshev
Dragomir N
DN
Dreischuh
Alexander
A
Denz
Cornelia
C
Krolikowski
Wieslaw
W
Kivshar
Yuri S
YS