title: Efficiency-enhanced photon sieve using Gaussian/overlapping distribution of pinholes.
abstract: A class of photon sieve is introduced whose structure is based on the overlapping pinholes in the innermost zones. This kind of distribution is produced by, for example, a particular form of Gaussian function. The focusing property of the proposed model was examined theoretically and experimentally. It is shown that under He-Ne laser and white light illumination, the focal spot size of this novel structure has considerably smaller FWHM than a photon sieve with randomly distributed pinholes and a Fresnel zone plate. In addition, secondary maxima have been suppressed effectively.
authors.affiliation: Physics Department, Faculty of Sciences, Urmia University, Urmia, Iran. a.sabatyan@urmia.ac.ir
authors.forename: A
authors.initials: A
authors.lastname: Sabatyan
authors.forename: S
authors.initials: S
authors.lastname: Mirzaie
mesh_terms: D054020:Lasers, Gas; D008962:Models, Theoretical; D055096:Optical Devices / Q000706:statistics & numerical data; D055620:Optical Phenomena; D017785:Photons