title: Observation of conical waves in focusing, dispersive, and dissipative Kerr media.
abstract: Excitation of unbalanced-Bessel beams by a gradual increase of nonlinearity in a water sample outlines the achievement of the first ever observed quasimonochromatic wave packet that propagates stably for hundreds of Rayleigh lengths in a focusing and dispersive Kerr medium, i.e., in the absence of spectral broadening and conical emission. A modulational instability analysis reveals the key role of nonlinear dissipation in quenching the growth of spatiotemporal unstable modes.
authors.affiliation: Department of Quantum Electronics, Vilnius University, Sauletekio Avenue 9, LT-10222 Vilnius, Lithuania.
authors.forename: P
authors.initials: P
authors.lastname: Polesana
authors.forename: A
authors.initials: A
authors.lastname: Couairon
authors.forename: D
authors.initials: D
authors.lastname: Faccio
authors.forename: A
authors.initials: A
authors.lastname: Parola
authors.forename: M A
authors.initials: MA
authors.lastname: Porras
authors.forename: A
authors.initials: A
authors.lastname: Dubietis
authors.forename: A
authors.initials: A
authors.lastname: Piskarskas
authors.forename: P
authors.initials: P
authors.lastname: Di Trapani