title: Observation of azimuthal modulational instability and formation of patterns of optical solitons in a quadratic nonlinear crystal.
abstract: We report what is believed to be the first experimental demonstration of the azimuthal self-breaking of intense beams containing a vortex phase dislocation into sets of optical spatial solitons in a quadratic nonlinear material. The observations were performed in a KTP crystal.
authors: D V
authors: DV
authors: Petrov
authors: L
authors: L
authors: Torner
authors: J
authors: J
authors: Martorell
authors: R
authors: R
authors: Vilaseca
authors: J P
authors: JP
authors: Torres
authors: C
authors: C
authors: Cojocaru