title: Achromatic design for the generation of optical vortices based on radial spiral phase plates.
abstract: A multi-element design scheme is proposed to produce optical vortices of large spectrum width. The key component within the approach is a radially modulated spiral phase plate. Apart from a conventional spiral phase plate having an azimuthal phase function, the proposed element possesses an additional change of phase in the radial direction.
authors.affiliation: Institute of Modern Optics, Key Laboratory of Optoelectronic Information Science & Technology, Ministry of Education of China, Nankai University, Tianjin 300071, China. xcyuan@nankai.edu.cn
authors.forename: X-C
authors.initials: XC
authors.lastname: Yuan
authors.forename: J
authors.initials: J
authors.lastname: Lin
authors.forename: J
authors.initials: J
authors.lastname: Bu
authors.forename: R E
authors.initials: RE
authors.lastname: Burge
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007834:Lasers; D008962:Models, Theoretical; D055095:Optics and Photonics / Q000295:instrumentation*; D012399:Rotation