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Highly-asymmetric soliton complexes in parabolic optical lattices
Yaroslav V. Kartashov, Victor V. Vysloukh, Lluis Torner
We introduce multipole soliton complexes in optical lattices induced by nondiffracting parabolic beams. Despite the symmetry-breaking dictated by the curvature of the lattice chann…
Ring surface waves in thermal nonlinear media
Yaroslav V. Kartashov, Victor A. Vysloukh, Lluis Torner
We address ring-shaped surface waves supported by defocusing thermal media with circular cross-section. Such waves exist because of the balance between repulsion from the interface…
Resonant mode flopping in modulated waveguiding structures
Yaroslav V. Kartashov, Victor A. Vysloukh, Lluis Torner
We put forward the concept of resonant, Rabi-like flopping and adiabatic transitions between confined light modes in properly modulated multimode waveguides. The phenomenon is show…
Soliton percolation in random optical lattices
Yaroslav V. Kartashov, Victor A. Vysloukh, Lluis Torner
We introduce soliton percolation phenomena in the nonlinear transport of light packets in suitable optical lattices with random properties. Specifically, we address lattices with a…
Dynamics of surface solitons at the edge of chirped optical lattices
Yaroslav V. Kartashov, Victor A. Vysloukh, Lluis Torner
We address soliton formation at the edge of chirped optical lattices imprinted in Kerr-type nonlinear media. We find families of power thresholdless surface waves that do not exist…
Rotating surface solitons
Yaroslav V. Kartashov, Victor A. Vysloukh, Lluis Torner
We introduce a novel type of surface waves that form at the edge of guiding structures consisting of several concentric rings. Such surface waves rotate steadily upon propagation a…
Stability of vortex solitons in thermal nonlinear media with cylindrical symmetry
Yaroslav V. Kartashov, Victor A. Vysloukh, Lluis Torner
We analyze the salient features of vortex-ring solitons supported by cylindrically symmetric media with nonlocal thermal nonlinearity. We discover the existence of a maximum allowe…
Surface waves in defocusing thermal nonlinear optical media
Yaroslav V. Kartashov, Fangwei Ye, Victor A. Vysloukh +1
We predict that the interface of materials with defocusing thermal nonlinearities support stable fundamental and higher-order surface waves when the opposite edges of the medium ar…
Guiding-center solitons in rotating potentials
Yaroslav V. Kartashov, Boris A. Malomed, Lluis Torner
We demonstrate that rotating quasi-one-dimensional potentials, periodic or parabolic, support solitons in settings where they are otherwise impossible. Ground-state and vortex soli…
Soliton emission in amplifying optical lattice surfaces
Yaroslav V. Kartashov, Victor A. Vysloukh, Lluis Torner
We address surface solitons supported by the interface of optical lattices imprinted in saturable media with surface-localized gain. The nonlinearity saturation puts restrictions o…
Observation of higher-order solitons in defocusing waveguide arrays
Eugene Smirnov, Christian E. Ruter, Detlef Kip +2
We observe experimentally higher-order solitons in waveguide arrays with defocusing saturable nonlinearity. Such solitons can comprise several in-phase bright spots and are stable…
Observation of two-dimensional surface solitons in anisotropic waveguide arrays
A. Szameit, Y. V. Kartashov, F. Dreisow +4
We report on the experimental observation of two-dimensional surface waves localized at the edge or in the corner of femtosecond laser-written waveguide arrays in fused silica. Inc…
Gray spatial solitons in nonlocal nonlinear media
Yaroslav V. Kartashov, Lluis Torner
We study gray solitons in nonlocal nonlinear media and show that they are stable and can form bound states. We reveal that gray soliton velocity depends on the nonlocality degree,…