title: Spherical aberration effects in lens-axicon doublets: theoretical study.
abstract: Effects of spherical aberrations in converging and diverging lens-axicon doublets are investigated. Intensity profiles are obtained in the line and ring focal regions by numerically solving the Fresnel-Kirchhoff integral. Comparisons with aberration-free computations show that higher peak irradiances occur for the converging doublet when spherical aberrations are included. Results are presented for axicons with small apex angles in lens-axicon combinations illuminated by collimated Gaussian 1.064-mum laser beams.
authors.forename: C
authors.initials: C
authors.lastname: Parigger
authors.forename: Y
authors.initials: Y
authors.lastname: Tang
authors.forename: D H
authors.initials: DH
authors.lastname: Plemmons
authors.forename: J W
authors.initials: JW
authors.lastname: Lewis