Observation of polychromatic vortex solitons.
We demonstrate experimentally the formation of polychromatic single- and double-charge optical vortex solitons by employing a lithium niobate crystal as a nonlinear medium with defocusing nonlinearity. We study the wavelength dependence of the vortex core localization and observe self-trapping of polychromatic vortices with a bandwidth spanning over more than 70 nm for single-charge and 180 nm for double-charge vortex solitons.
Neshev
Dragomir N
DN
Nonlinear Physics Center, Research School of Physical Sciences and Engineering, Australian National University, Canberra ACT, Australia. dnn@rsphysse.anu.edu.au
Dreischuh
Alexander
A
Shvedov
Vladlen
V
Desyatnikov
Anton S
AS
Krolikowski
Wieslaw
W
Kivshar
Yuri S
YS