Vortex solitons in an off-resonant Raman medium
arXiv:0805.1185 · doi:10.1103/PhysRevA.77.063810
Abstract
We investigate existence and linear stability of coupled vortex solitons supported by cascaded four-wave mixing in a Raman active medium excited away from the resonance. We present a detailed analysis for the two- and three-component vortex solitons and demonstrate the formation of stable and unstable vortex solitons, and associated spatio-temporal helical beams, under the conditions of the simultaneous frequency and vortex comb generation.
8 pages, 10 figures, to be published in Phys. Rev. A
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