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Non-diffractive light beams and bullets in nonlinear media with dissipation
Research Areas
  • Physics chemical and mathematical
We review the properties of nonlinear lossy light bullets (LLBs), a family of nondiffractive and non-dispersive light wave packets in homogeneous, isotropic, nonlinear media sustained by a dynamic balance between nonlinear energy dissipation and self-focusing. The properties of LLBs differ substantially from those of other well-known families of non-diffractive, nonlinear light bullets, as solitary, conical, or dissipative light bullets. LLBs are substantially nonlinear and multidimensional (two or three dimensional) waves, and feature a rather complex structure in space and time. They survive to nonlinear losses and rebuild after obstacles, but these properties do not result from a peculiar geometry, as in conical light bullets, or from a gain that balances the losses, as in dissipative light bullets. The stationary propagation of LLBs in media with nonlinear losses results from the refilling effect of self-focusing, which creates a continuous energy flux from a widespread energy reservoir in the periphery of the light bullet towards the intense, central core of the bullet, where energy is continuously absorbed. The stability properties of LLBs against perturbations are studied in detail. Nonlinear losses not only do not prevent from the existence of stationary propagation, but also provide stability. In fact, the LLB with maximum intensity supported by a nonlinear medium shows maximum stability properties, and acts as an attractor of the two-dimensional or three-dimensional self-focusing dynamics in media with nonlinear losses. The existence of this attractor can explain many facts of the observed self-focusing and filamentation dynamics of standard (Gaussian-like) light wave packets when collapse is halted by nonlinear losses.
Progress In Electromagnetics Research Symposium (PIERS2013). [www.piers.org/piers2013Stockholm]
Stockholm, Sweden
Start Date
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PIERS 2013 Stockholm. Progress In Electromagnetics Research Symposium. [http://www.piers.org/piers2013Stockholm/programfinal.php]
  • Autor: Miguel Angel Porras Borrego (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Grupo de Sistemas Complejos
  • Departamento: Física Aplicada a los Recursos Naturales
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