title: Spherical coordinate descriptions of cylindrical and spherical Bessel beams.
abstract: This paper derives a generalized spherical harmonic description of Bessel beams. The spherical harmonic description of the well-known cylindrical Bessel beams is reviewed and a family of spherical Bessel beams are introduced which can provide a number of azimuthal phase variations for a single beam radial amplitude. The results are verified by numerical simulations.
authors.affiliation: Callaghan Innovation, P.O. Box 31-310, Lower Hutt 5040, New Zealand.
authors.forename: M A
authors.initials: MA
authors.lastname: Poletti