Observation of optical azimuthons.
We observe experimentally optical azimuthons, a generic class of ring-shaped localised spiralling beams with azimuthal modulation, carrying phase dislocation in self-focusing nonlinear media. We observe three- and four-lobe azimuthons in 87Rb vapours and demonstrate their anomalous rotation controlled by the input phase distribution.
Minovich
Alexander
A
Nonlinear Physics Centre, Research School of Physics and Engineering, The Australian National University, Canberra, ACT 0200, Australia.
Neshev
Dragomir N
DN
Desyatnikov
Anton S
AS
Krolikowski
Wieslaw
W
Kivshar
Yuri S
YS
D003198:Computer Simulation; D008027:Light; D008029:Lighting / Q000379:methods*; D008962:Models, Theoretical; D012542:Scattering, Radiation