title: On the nonparaxial corrections of Bessel-Gauss beams.
abstract: The nonparaxial corrections for Bessel-Gauss beams were derived recently using two different approaches [Borghi et al., J. Opt. Soc. Am. A 18, 1618 (2001) and Vaveliuk et al., J. Opt. Soc. Am. A 24, 3297 (2007)]. However, the two obtained results do not agree, so it is necessary to determine which method is correct. In the most recent of those papers, Vaveliuk et al. claimed that their method is correct while the method described by Borghi et al. is incorrect. In the present work, just by solving the rigorous propagation problem, we show that exactly the converse is true.
authors.affiliation: Optics Research Group, Department of Imaging Science and Technology, Delft University of Technology, P.O. Box 5046, 2600 GA Delft, The Netherlands. o.elgawhary@tudelft.nl
authors.forename: Omar
authors.initials: O
authors.lastname: El Gawhary
authors.forename: Sergio
authors.initials: S
authors.lastname: Severini