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Descripción
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| The research on light beams carrying orbital angular momentum, and in particular those with screw topological wave front dislocations or vortices, was initially focused on Laguerre-Gauss beams, but quickly spread to other vortex beams, many of them endowed by the property of being non-diffracting, as high-order Bessel beams in the linear regime of propagation, vortex solitons in transparent nonlinear media, and dissipative solitons in media with gain and losses. In this work we describe a novel class of vortex beams that we have called nonlinear vortex Bessel beams with the unique feature that can propagate without any change, including any attenuation, while continuously dissipating energy and orbital angular momentum in the host medium via multiphoton absorption. This "self-healing" property makes these beams particularly attractive in applications requiring optical pumping of angular momentum. Nonlinear vortex Bessel beams are easily generated in practice from standard axicon-generated high-order Bessel beams. Recent studies in the highly nonlinear regime indicate that they are also involved in a new type of light filamentation with tubular geometry. Contrary to many vortex solitons, nonlinear vortex Bessel beams do not require Kerr-type nonlinearities to exist, but only nonlinear absorption, and therefore are not affected by Kerr-induced instabilities. | |
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Internacional
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Si |
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Nombre congreso
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The 36th Progress In Electromagnetics Research Symposium (PIERS 2015) [http://piers.org/piers2015Prague/] |
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Tipo de participación
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960 |
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Lugar del congreso
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Praga (Chequia) |
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Revisores
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Si |
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ISBN o ISSN
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978-1-934142-29-5 |
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DOI
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Fecha inicio congreso
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06/07/2015 |
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Fecha fin congreso
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09/07/2015 |
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Desde la página
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996 |
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Hasta la página
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996 |
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Título de las actas
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Progress In Electromagnetics Research Symposium - Abstracts [http://piers.org/piersproceedings/piers2015Prague.php] |