title: Parametric self-trapping in the presence of randomized quasi phase matching.
abstract: We report on experimental evidence of parametric spatial solitons in a quadratic crystal with randomized periodic ferroelectric poling. Two-color self-focusing via quadratic cascading overcomes the diffractive nature of both fundamental and frequency-doubled beams.
authors.affiliation: CNR-ISC-Institute of Complex Systems, Department of Physics, University Sapienza, 00185 Rome, Italy.
authors.forename: Claudio
authors.initials: C
authors.lastname: Conti
authors.forename: Elena
authors.initials: E
authors.lastname: D'Asaro
authors.forename: Salvatore
authors.initials: S
authors.lastname: Stivala
authors.forename: Alessandro
authors.initials: A
authors.lastname: Busacca
authors.forename: Gaetano
authors.initials: G
authors.lastname: Assanto