title: Beam duality, with application to generalized Bessel-Gaussian, and Hermite- and Laguerre- Gaussian beams.
abstract: The concept of the dual of a beam is discussed. The duals of Bessel-Gauss beams, elegant Hermite- or Laguerre-Gaussian beams and generalized Hermite- or Laguerre-Gauss beams are described. Duality is considered within the framework of hypergeometric beams in Cartesian and polar coordinates. The connection with the "modified Laguerre-Gauss" beam is discussed.
authors.affiliation: Division of Bioengineering, National University of Singapore, 7 Engineering Drive 1, Singapore 117574. colin@nus.edu.sg
authors.forename: Colin J R
authors.initials: CJ
authors.lastname: Sheppard