Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Stable Bessel Vortex Beams Sustained By Multiphoton Absorption In Self-focusing Kerr Media
Year:2017
Research Areas
  • Physics chemical and mathematical
Information
Abstract
Bessel vortex beams (BVBs) are vorticity-carrying nonlinear Bessel modes, propagation-invariant solutions of the nonlinear Schödinger equation with Kerr and multiphoton absorption (MPA) nonlinearities. As for the fundamental nonlinear Bessel beam case, their stationarity is supported by a power reservoir mechanism, which arises from its weak localization. In this work it is demonstrated how the MPA effect provides BVBs of simple and multiple topological charges with complete stability against both azimuthal breakup and collapse. A linearized stability analysis for small perturbations is used to vaticinate the stabilizing properties, and direct numerical simulations to verify the results. Furthermore, it is described how the model here proposed allows a common explanation to the three dynamical regimes previously observed in axicon-generated vortex beams propagating in nonlinear media: tubular, rotatory or specklelike filament regimes.
International
No
Congress
XXXVI Reunión Bienal de la Real Sociedad Española de Física (Simposio de Óptica Cuántica y Óptica No Lineal) [http://www.bienalrsef2017.com]
960
Place
Santiago de Compostela (España)
Reviewers
Si
ISBN/ISSN
CDP08UPM
Start Date
17/07/2017
End Date
21/07/2017
From page
222
To page
222
XXXVI Reunión Bienal de la Real Sociedad Española de Física [https://indico.ific.uv.es/event/2851/contributions/4486/contribution.pdf]
Participants
  • Autor: Marcio Bruno Da Silva Matos Carvalho (UPM)
  • Autor: Carlos Ruiz Jimenez (UPM)
  • Autor: Miguel Angel Porras Borrego (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Grupo de Sistemas Complejos
  • Departamento: Energía y Combustibles
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