Nonlinear propagation and quasi self-confinement of light in plasmonic resonant media
Date
2018
Authors
Shvedov, Vladlen
Cyprych, Konrad
Salazar-Romero, M.Yadira
Izdebskaya, Yana
Krolikowski, Wieslaw
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Optical Society of America
Abstract
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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Optics Express
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Journal article
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Open Access
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