Now showing items 15-21 of 21

  • Self-trapping and splitting of bright vector solitons under inhomogeneous defocusing nonlinearities 

    Kartashov, Yaroslav; Vysloukh, Victor A.; Torner Sabata, Lluís; Malomed, Boris A. (2011-12-01)
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    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 sufficiently strong cross-phase-modulation ...
  • Soliton generation by counteracting gain-guiding and self-bending 

    Lobanov, Valery E.; Kartashov, Yaroslav V.; Vysloukh, Victor A.; Torner Sabata, Lluís (2012-11-01)
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    We introduce a concept for stable spatial soliton formation, mediated by the competition between self-bending induced by a strongly asymmetric nonlocal nonlinearity and spatially localized gain superimposed on a wide ...
  • Solitons in geometric potentials 

    Kartashov, Yaroslav; Szameit, A.; Keil, R.; Vysloukh, Victor A.; Torner Sabata, Lluís (2011-07-01)
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    We show that the geometrically induced potential existing in undulated slab waveguides dramatically affects the properties of solitons. In particular, whereas solitons residing in the potential maxima do not feature power ...
  • Solitons in spiraling Vogel lattices 

    Kartashov, Yaroslav V.; Vysloukh, Victor A.; Torner Sabata, Lluís (2013-01-15)
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    We address light propagation in Vogel optical lattices and show that such lattices support a variety of stable soliton solutions in both self-focusing and self-defocusing media, whose propagation constants belong to domains ...
  • Solitons supported by spatially inhomogeneous nonlinear losses 

    Borovkova, Olga V.; Kartashov, Yaroslav; Vysloukh, Victor A.; Lobanov, Valery E.; Malomed, Boris A.; Torner Sabata, Lluís (2012)
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    We uncover that, in contrast to the common belief, stable dissipative solitons exist in media with uniform gain in the presence of nonuniform cubic losses, whose local strength grows with coordinate η (in one dimension) ...
  • Stripe-like quasi-nondiffracting optical lattices 

    Kartashov, Yaroslav; López Aguayo, Servando; Vysloukh, Victor A.; Torner Sabata, Lluís (2011-05-09)
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    We introduce stripe-like quasi-nondiffracting lattices that can be generated via spatial spectrum engineering. The complexity of the spatial shapes of such lattices and the distance of their almost diffractionless propagation ...
  • Topological light bullets supported by spatiotemporal gain 

    Lobanov, Valery E.; Borovkova, Olga V.; Kartashov, Yaroslav; Vysloukh, Victor A.; Torner Sabata, Lluís (2012-02-02)
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    We reveal that the competition among diffraction, cubic nonlinearity, two-photon absorption, and gain localized in both space and time results in arrest of collapse, suppression of azimuthal modulation instabilities for ...