Stability of vortex solitons under competing local and nonlocal cubic nonlinearities

Shen, Ming; Li, Bailing; Ge, Lijuan; Chen, Wei; Wu, Di

doi:10.1016/j.optcom.2014.10.017

Cited by 8 publications

(1 citation statement)

References 62 publications

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“…If the local self-focusing takes place in the suspension, the ring-shaped beams should be a subject of destructive amplitude and phase perturbations leading to the azimuthal instability [8,23]. On the other hand, nonlocality of the negative refractive index change provided only by the thermo-optical response typically supports stable complex structure beam in nonlinear defocusing media [24][25][26]. Therefore one may expect that a beam with complex intensity and polarization structure should break into individual filaments in the local self-focusing media or preserve their structure in the non-local defocusing media.…”

Section: Methodsmentioning

confidence: 99%

Nonlinear propagation and quasi self-confinement of light in plasmonic resonant media

et al. 2018

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We study nonlinear propagation of light in colloidal suspension of metallic nanoparticles, in the regime of particles surface plasmon resonance. We show that the propagation exhibits features typical for purely defocusing media and the observed spatial confinement is not a real self-trapping, as for solitons, but rather than is caused by the phase modulation of the beam via nonlocal defocusing nonlinearity. We also show that the light-induced refractive index change in the suspension leads to stabilization of structured light beams. In particular, we demonstrate a stable nonlinear propagation of bright ring beams with complex states of polarization, including practically important radial and azimuthal states.

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