title: Shaped nondiffracting beams.
abstract: We demonstrate that nondiffracting beams can be generated with an arbitrary transverse shape. In particular, we show that the azimuthal complex modulation of the angular spectra of Helmholtz-Gauss wave fields constitutes a degree of freedom sufficient to tailor nondiffracting beams with an intensity pattern of choice.
authors.affiliation: National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8424, USA. clopez@nist.gov
authors.forename: Carlos
authors.initials: C
authors.lastname: López-Mariscal
authors.forename: Kristian
authors.initials: K
authors.lastname: Helmerson