title: Generalized Bessel beams with two indices.
abstract: We report on a new class of exact solutions of the scalar Helmholtz equation obtained by carefully engineering the form of the angular spectrum of a Bessel beam. We consider in particular the case in which the angular spectrum of such generalized beams has, in the paraxial zone, the same radial structure as Laguerre-Gaussian beams. We investigate the form of these new beams as well as their peculiar propagation properties.
authors.forename: Marco
authors.initials: M
authors.lastname: Ornigotti
authors.forename: Andrea
authors.initials: A
authors.lastname: Aiello