Spatial-spectral vortex solitons in quadratic lattices

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BOZKURT M., Sukhorukov A. A.

OPTICS LETTERS, vol.34, no.8, pp.1168-1170, 2009 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 34 Issue: 8
  • Publication Date: 2009
  • Doi Number: 10.1364/ol.34.001168
  • Journal Name: OPTICS LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1168-1170
  • Ankara University Affiliated: Yes

Abstract

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. (C) 2009 Optical Society of America