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Light localization in nonuniformly randomized lattices
Yaroslav V. Kartashov, Vladimir V. Konotop, Victor A. Vysloukh +1
We address Anderson localization of light in disordered optical lattices where the disorder strength varies across the transverse direction. Such variation changes the preferred do…
Self-trapping and splitting of bright vector solitons under inhomogeneous defocusing nonlinearities
Yaroslav V. Kartashov, Victor A. Vysloukh, Lluis Torner +1
We show that bimodal systems with a spatially nonuniform defocusing cubic nonlinearity, whose strength grows toward the periphery, can support stable two-component solitons. For a…
Vortex twins and anti-twins supported by multi-ring gain landscapes
Olga V. Borovkova, Yaroslav V. Kartashov, Valery E. Lobanov +2
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 compl…
Bright solitons from defocusing nonlinearities
Olga V. Borovkova, Yaroslav V. Kartashov, Lluis Torner +1
We report that defocusing cubic media with spatially inhomogeneous nonlinearity, whose strength increases rapidly enough toward the periphery, can support stable bright localized m…
Algebraic bright and vortex solitons in defocusing media
Olga V. Borovkova, Yaroslav V. Kartashov, Boris A. Malomed +1
We demonstrate that spatially inhomogeneous defocusing nonlinear landscapes with the nonlinearity coefficient growing toward the periphery as [1+abs(r)]**a support one- and two-dim…
Solitons in geometric potentials
Yaroslav V. Kartashov, Alexander Szameit, Robert Keil +2
We show that the geometrically-induced potential existing in undulated slab waveguides dramatically affects the properties of solitons. In particular, whereas solitons residing in…