title: Selective generation of high-order optical vortices from a single phase wedge.
abstract: We demonstrate that it is possible to generate high-order optical vortices from a single phase wedge by applying an incident beam with an annular intensity distribution. Various topological charges of optical vortices are realized by a static phase wedge when the position and radius of the annular illumination are changed accordingly.
authors.affiliation: Photonics Research Centre, School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798.
authors.forename: J
authors.initials: J
authors.lastname: Lin
authors.forename: X-C
authors.initials: XC
authors.lastname: Yuan
authors.forename: J
authors.initials: J
authors.lastname: Bu
authors.forename: B P
authors.initials: BP
authors.lastname: Ahluwalia
authors.forename: Y Y
authors.initials: YY
authors.lastname: Sun
authors.forename: R E
authors.initials: RE
authors.lastname: Burge