Vortex twins and anti-twins supported by multi-ring gain landscapes

Abstract

We address the properties of multi-vortex soliton complexes supported by multi-ring gain landscapes in focusing Kerr nonlinear media with strong two-photon absorption. Stable complexes incorporating two, three, or four vortices featuring opposite or identical topological charges are shown to exist. In the simplest geometries with two amplifying rings vortex twins with equal topological charges exhibit asymmetric intensity distributions, while vortex anti-twins may be symmetric or asymmetric, depending on the gain level and separation between rings. Different arrangements of amplifying rings allow generation of stable multi-vortex soliton complexes with various topologies, with twins and anti-twins as building blocks.

3 pages, 3 figures, to appear in Optics Letters

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Cited by in corpus (8)

• Pinned modes in lossy lattices with local gain and nonlinearity
• Stable vortex solitons sustained by a localized gain in the cubic medium
• Fundamental and vortex dissipative quadratic solitons supported by spatially localized gain
• Dissipative quadratic solitons supported by a localized gain
• Holding spatial solitons in a pumped cavity with the help of nonlinear potentials
• Pinned modes in two-dimensional lossy lattices with local gain and nonlinearity
• Symmetric and antisymmetric nonlinear modes supported by dual local gain in lossy lattices
• Stable high-charge vortex dissipative solitons in azimuthally modulated waveguide arrays with localized gain