title: Generation of Bessel beam arrays through Dammann gratings.
abstract: In this work we apply the Dammann grating concept to generate an equal-intensity square array of Bessel quasi-free diffraction beams that diverge from a common center. We generate a binary phase mask that combines the axicon phase with the phase of a Dammann grating. The procedure can be extended to include vortex spiral phases that generate an array of optical pipes. Experimental results are provided by means of a twisted nematic liquid crystal display operating as a binary π phase spatial light modulator.
authors.affiliation: Departament d’Òptica, Universitat de València, 46100 Burjassot, Spain. pascuala.garcia@uv.es
authors.forename: Pascuala
authors.initials: P
authors.lastname: García-Martínez
authors.forename: María M
authors.initials: MM
authors.lastname: Sánchez-López
authors.forename: Jeffrey A
authors.initials: JA
authors.lastname: Davis
authors.forename: Don M
authors.initials: DM
authors.lastname: Cottrell
authors.forename: David
authors.initials: D
authors.lastname: Sand
authors.forename: Ignacio
authors.initials: I
authors.lastname: Moreno
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D007834:Lasers; D008027:Light; D050866:Liquid Crystals; D008962:Models, Theoretical; D055096:Optical Devices; D055620:Optical Phenomena; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation