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Spatial optical solitons in highly nonlocal media

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Yksityiskohdat

AlkuperäiskieliEnglanti
Artikkeli013841
Sivumäärä10
JulkaisuPhysical Review A
Vuosikerta91
DOI - pysyväislinkit
TilaJulkaistu - 27 tammikuuta 2015
OKM-julkaisutyyppiA1 Alkuperäisartikkeli

Tiivistelmä

We theoretically investigate the propagation of bright spatial solitary waves in highly nonlocal media possessing radial symmetry in a three-dimensional cylindrical geometry. Focusing on a thermal nonlinearity, modeled by a Poisson equation, we show how the profile of the light-induced waveguide strongly depends on the extension of the nonlinear medium in the propagation direction as compared to the beamwidth. We demonstrate that self-trapped beams undergo oscillations in size, either periodically or aperiodically, depending on the input waist and power. The-usually neglected-role of the longitudinal nonlocality as well as the detrimental effect of absorptive losses are addressed.

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