title: Double-slit interference with Laguerre-Gaussian beams.
abstract: The interference of Laguerre-Gaussian beams carrying orbital angular momentum was demonstrated in Young's double-slit geometry. Double-slit interference is shown to be affected by the azimuthal phase dependence of a Laguerre-Gaussian beam. This interference provides new insight into the helical phase structure of the Laguerre-Gaussian beam and has potential applications for measuring the orbital angular momentum of an arbitrary wavefront.
authors.affiliation: Institute for Ultrafast Spectroscopy and Lasers, NASA Center for Optical Sensing and Imaging, Physics Department, The City College and Graduate School of the City University of New York, New York 10031, USA. hsztul@gc.cuny.edu
authors.forename: H I
authors.initials: HI
authors.lastname: Sztul
authors.forename: R R
authors.initials: RR
authors.lastname: Alfano