title: Cooperative oscillation of nondegenerate transverse modes in an optical system: multimode operation in parametric oscillators.
abstract: We show experimentally that parametric interaction can induce a cooperative oscillation of non-simultaneously resonant transverse modes in an optical parametric oscillator. More generally, this effect is expected to occur in any spatially extended system subjected to boundary conditions where nonlinear wave mixing of two nonresonant spatial modes can generate a resonant oscillation.
authors.affiliation: Institut de Physique de Rennes, Université de Rennes 1, Campus de Beaulieu, F-35042 Rennes, France.
authors.forename: Axelle
authors.initials: A
authors.lastname: Amon
authors.forename: Pierre
authors.initials: P
authors.lastname: Suret
authors.forename: Serge
authors.initials: S
authors.lastname: Bielawski
authors.forename: Dominique
authors.initials: D
authors.lastname: Derozier
authors.forename: Marc
authors.initials: M
authors.lastname: Lefranc