title: Bessel X waves in two- and three-dimensional bidispersive optical systems.
abstract: We show that new families of two- and three-dimensional nondiffracting Bessel X waves are possible in linear bidispersive optical systems. These X waves can be observed in both bulk and waveguide configurations as well as in photonic crystal lattices that simultaneously exhibit normal and anomalous dispersive-diffractive properties in different spatial or spatiotemporal coordinates.
authors.affiliation: School of Optics/Center for Research and Education in Optics and Lasers, University of Central Florida, Orlando, Florida 32816-2700, USA.
authors.forename: Demetrios N
authors.initials: DN
authors.lastname: Christodoulides
authors.forename: Nikolaos K
authors.initials: NK
authors.lastname: Efremidis
authors.forename: Paolo
authors.initials: P
authors.lastname: Di Trapani
authors.forename: Boris A
authors.initials: BA
authors.lastname: Malomed