Patent ID: 7646546

Claim:
A frequency converted laser system, comprising: a waveguide comprising at least one nonlinear material, said waveguide being configured to receive an input laser beam of a first frequency and emit a non-circular shaped laser beam having a second frequency, the second frequency different than the first frequency; and an anamorphic optical system configured to input a laser beam emitted from said waveguide, said anamorphic optical system comprising a first prism and a second prism configured to provide an anamorphic change to the shape of the input beam, the first prism and second prism each comprising an input surface and an exit surface, wherein at least one of said input or exit surfaces of the first or second prisms is coated with a polarization selective coating, said anamorphic optical system being configured to transform the input laser beam from the waveguide into a polarized output laser beam with an anamorphically changed beam shape, wherein said anamorphic optical system is configured to transform the input beam to an output beam having a polarization ratio of about 100:1 or higher.