title: Nonlinear electromagnetic X waves.
abstract: Nonlinear optical media that are normally dispersive support a new type of localized (nondiffractive and nondispersive) wave packets that are X shaped in space and time and have slower than exponential decay. High-intensity X waves, unlike linear ones, can be formed spontaneously through a trigger mechanism of conical emission, thus playing an important role in experiments.
authors.affiliation: Istituto Nazionale di Fisica della Materia-RM3, Via della Vasca Navale 84, 00146 Roma, Italy.
authors.forename: C
authors.initials: C
authors.lastname: Conti
authors.forename: S
authors.initials: S
authors.lastname: Trillo
authors.forename: P
authors.initials: P
authors.lastname: Di Trapani
authors.forename: G
authors.initials: G
authors.lastname: Valiulis
authors.forename: A
authors.initials: A
authors.lastname: Piskarskas
authors.forename: O
authors.initials: O
authors.lastname: Jedrkiewicz
authors.forename: J
authors.initials: J
authors.lastname: Trull