title: Refracting system for annular laser beam transformation.
abstract: A refracting optical system is designed for the transformation of an annular laser beam to a uniform circular beam. The optical surfaces of the proposed system are easy to fabricate as they involve moderate values of radii of curvatrue. The change in the radii of curvature is found to be gradual throughout the surface.
authors.forename: M A
authors.initials: MA
authors.lastname: Karim
authors.forename: A K
authors.initials: AK
authors.lastname: Cherri
authors.forename: A A
authors.initials: AA
authors.lastname: Awwal
authors.forename: A
authors.initials: A
authors.lastname: Basit