title: Nonlinear supratransmission in multicomponent systems.
abstract: A method is proposed to solve the challenging problem of determining the supratransmission threshold (onset of instability of harmonic boundary driving inside a band gap) in multicomponent nonintegrable nonlinear systems. It is successfully applied to the degenerate three-wave resonant interaction in a birefringent quadratic medium where the process generates spatial gap solitons. No analytic expression is known for this model showing the broad applicability of the method to nonlinear systems.
authors.affiliation: Laboratoire de Physique Théorique et Astroparticules, CNRS-IN2P3-UMR5207, Université Montpellier 2, 34095 Montpellier, France.
authors.forename: P
authors.initials: P
authors.lastname: Anghel-Vasilescu
authors.forename: J
authors.initials: J
authors.lastname: Dorignac
authors.forename: F
authors.initials: F
authors.lastname: Geniet
authors.forename: J
authors.initials: J
authors.lastname: Leon
authors.forename: M
authors.initials: M
authors.lastname: Taki