title: Noise-seeded spatiotemporal modulation instability in normal dispersion.
abstract: In optical second-harmonic generation with normal dispersion, the virtually infinite bandwidth of the unbounded, hyperbolic, modulational instability leads to quenching of spatial multisoliton formation and to the occurrence of a catastrophic spatiotemporal breakup when an extended beam is left to interact with an extremely weak external noise with a coherence time much shorter than that of the pump.
authors.affiliation: INFM e Dipartimento di Fisica e Matematica, Universitá dell'Insubria, Via Valleggio 11, 22100 Como, Italy.
authors.forename: D
authors.initials: D
authors.lastname: Salerno
authors.forename: O
authors.initials: O
authors.lastname: Jedrkiewicz
authors.forename: J
authors.initials: J
authors.lastname: Trull
authors.forename: G
authors.initials: G
authors.lastname: Valiulis
authors.forename: A
authors.initials: A
authors.lastname: Picozzi
authors.forename: P
authors.initials: P
authors.lastname: Di Trapani