title: Stabilized vortices in layered Kerr media.
abstract: In this paper, we demonstrate the possibility of stabilizing beams with angular momentum propagating in Kerr media against filamentation and collapse. Very long propagation distances can be achieved by combining the choice of an appropriate layered medium with alternating focusing and defocusing nonlinearities with the presence of an incoherent guiding beam which is itself stabilized in this medium. The applicability of the results to the field of matter waves is also discussed.
authors.affiliation: Departamento de Matemáticas, Escuela Técnica Superior de Ingenieros Industriales, Universidad de Castilla-La Mancha, Ciudad Real, Spain.
authors.forename: Gaspar D
authors.initials: GD
authors.lastname: Montesinos
authors.forename: Víctor M
authors.initials: VM
authors.lastname: Pérez-García
authors.forename: Humberto
authors.initials: H
authors.lastname: Michinel
authors.forename: José R
authors.initials: JR
authors.lastname: Salgueiro