Observation of quadratic optical vortex solitons
We report on the generation of stable dark-vortex solitons in large-phase-mismatched second-harmonic generation of self-defocusing type, sustained by a combined effect of transverse walk-off and finite beam size.
Di Trapani P
INFM and Department of Chemical, Physical and Mathematical Sciences, University of Insubria at Como, 22100 Como, Italy.
Chinaglia
W
Minardi
S
Piskarskas
A
Valiulis
G