title: Relationship between elegant Laguerre-Gauss and Bessel-Gauss beams.
abstract: We show that the elegant Laguerre-Gauss light beams of high radial order n are asymptotically equal to Bessel-Gauss light beams. The Bessel-Gauss beam equivalent to each elegant Laguerre-Gauss beam is found and shown to have almost identical propagation factors M2. In the limit n-->infinity, elegant Laguerre-Gauss beams can be identified with Durnin's Bessel beam. Our results suggest a new experimental procedure for generating light beams with nondiffractinglike properties directly from the output of a stable resonator.
authors.affiliation: Departamento de Física Aplicada, Escuela de Ingenieros de Minas, Universidad Politécnica de Madrid, Spain. porras@dfarn.upm.es
authors.forename: M A
authors.initials: MA
authors.lastname: Porras
authors.forename: R
authors.initials: R
authors.lastname: Borghi
authors.forename: M
authors.initials: M
authors.lastname: Santarsiero