title: Discrete X-wave formation in nonlinear waveguide arrays.
abstract: We present experimental evidence for the spontaneous formation of discrete X waves in AlGaAs waveguide arrays. This new family of optical waves has been excited, for the first time, by using the interplay between discrete diffraction and normal temporal dispersion, in the presence of Kerr nonlinearity. Our experimental results are in good agreement with theoretical predictions.
authors.affiliation: Department of Physics of Complex Systems, the Weizmann Institute of Science, 76100 Rehovot, Israel. yoav.lahini@weizmann.ac.il
authors.forename: Yoav
authors.initials: Y
authors.lastname: Lahini
authors.forename: Eugene
authors.initials: E
authors.lastname: Frumker
authors.forename: Yaron
authors.initials: Y
authors.lastname: Silberberg
authors.forename: Sotiris
authors.initials: S
authors.lastname: Droulias
authors.forename: Kyriakos
authors.initials: K
authors.lastname: Hizanidis
authors.forename: Roberto
authors.initials: R
authors.lastname: Morandotti
authors.forename: Demetrios N
authors.initials: DN
authors.lastname: Christodoulides