Spatial-Spectral Vortex Solitons in Quadratic Lattices

Details Spatial-Spectral Vortex Solitons in Quadratic Lattices Spatial-Spectral Vortex Solitons in Quadratic Lattices

2009-03-11

arxiv.org/abs/0903.1890v1

Optics Letters 34, 1168 (2009)

Physics

Optics

4 pages, 3 figures, to appear in Optics Letters

Scientific paper

We predict the existence of spatial-spectral vortex solitons in one-dimensional periodic waveguide arrays with quadratic nonlinear response. In such vortices the energy flow forms a closed loop through the simultaneous effects of phase gradients at the fundamental frequency and second-harmonic fields, and the parametric frequency conversion between the spectral components. The linear stability analysis shows that such modes are stable in a broad parameter region.

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