title: Annular phase-only mask for high focal depth.
abstract: We present an annularly distributed phase-only mask that generates an axial irradiance distribution identical to the point spread function of the Dowski-Cathey lens [Appl. Opt. 34, 1859 (1995)]. This apodizer has an ambiguity function with a bow-tie effect, and consequently its axial modulation transfer function varies slowly with spherical aberration.
authors.affiliation: School of Science, University of las Americas, Puebla 72820, Mexico. jorge.ojeda@udlap.mx
authors.forename: J
authors.initials: J
authors.lastname: Ojeda-Castaneda
authors.forename: J E A
authors.initials: JE
authors.lastname: Landgrave
authors.forename: H M
authors.initials: HM
authors.lastname: Escamilla