2004/03/22 by Tristram J. Alexander, Andrey A. Sukhorukov, Yuri S. Kivshar · 6 citations
Physics and Astronomy · #Advanced Fiber Laser Technologies #Nonlinear Photonic Systems #Strong Light-Matter Interactions #cond-mat.other #nlin.PS #physics.optics
paper · pdf · doi:10.1103/physrevlett.93.063901
published as Phys. Rev. Lett. 93, 063901 (2004) · 4 pages, 5 figures
arxiv created 2004/03/22 · openalex publication_date 2004/08/03 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We reveal the existence of asymmetric vortex solitons in ideally symmetric periodic lattices and show how such nonlinear localized structures describing elementary circular flows can be analyzed systematically using the energy-balance relations. We present the examples of rhomboid, rectangular, and triangular vortex solitons on a square lattice and also describe novel coherent states where the populations of clockwise and anticlockwise vortex modes change periodically due to a nonlinearity-induced momentum exchange through the lattice. Asymmetric vortex solitons are expected to exist in different nonlinear lattice systems, including optically induced photonic lattices, nonlinear photonic crystals, and Bose-Einstein condensates in optical lattices.