2008/08/25 by Yaroslav V. Kartashov, Victor A. Vysloukh, Lluis Torner +1 · 2 citations
Physics and Astronomy · #Advanced Fiber Laser Technologies #Nonlinear Photonic Systems #Nonlinear Waves and Solitons #nlin.PS #physics.optics
paper · pdf · doi:10.1364/ol.33.002173
published as Optics Letters 33, 2173 (2008) · 11 pages, 3 figures, to appear in Optics Letters
arxiv created 2008/08/25 · openalex publication_date 2008/09/17 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We address vortex solitons supported by optical lattices featuring modulation of both the linear and nonlinear refractive indices. We find that when the modulation is out of phase the competition between both effects results in remarkable shape transformations of the solitons that profoundly affect their properties and stability. Nonlinear refractive index modulation is found to impose restrictions on the maximal power of off-site solitons, which are shown to be stable only below a maximum nonlinearity modulation depth.