Elliptic Vortices in Composite Mathieu Lattices

Abstract

We address the elliptically shaped vortex solitons in defocusing nonlinear media imprinted with a composite Mathieu lattice. Elliptic vortices feature anisotropic patterns both in intensity and phase, and can only exist when their energy flow exceed some certain threshold. Single-charged elliptic vortices are found to arise via bifurcation from dipole modes, which, to the best of our knowledge is the first example in the context of optics studies of symmetry breaking bifurcations for the phase dislocations of different dimensionalities. Higher-order elliptic vortices with topological charge could exhibit spatially separated single-charged phase singularities, leading to their stabilization. The salient features of reported elliptic vortices qualitatively hold for other elliptic shaped confining potentials.

22 pages, 5 figures, to appear in Phys. Rev. A

References in corpus (7)

• Stable ring vortex solitons in Bessel optical lattices
• Nonlinear plasmonic slot waveguides
• Vorticity cutoff in nonlinear photonic crystals
• A vortex dipole in a trapped two-dimensional Bose-Einstein condensate
• Stability and dynamics of vortex clusters in nonrotated Bose-Einstein condensates
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Cited by in corpus (5)

• The variety of stable vortical solitons in Ginzburg-Landau media with radially inhomogeneous losses
• Multiplexing complex two-dimensional photonic superlattices
• Solitons in spiraling Vogel lattices
• Stripe-like quasi-nondiffracting optical lattices
• Two-dimensional gap solitons in elliptic-lattice potentials