The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 01, 1996
Filed:
Feb. 04, 1994
Mark S Keirstead, San Jose, CA (US);
William L Nighan, Jr, Menlo Park, CA (US);
Thomas M Baer, Mountain View, CA (US);
Spectra-Physics Lasers, Inc., Mountain View, CA (US);
Abstract
The ellipticity of a thermal lens is controlled in a diode-pumped anisotropic crystal, such as Nd:YVO4. The crystal has two opposing optical end faces through which a pump beam and an output beam pass. The crystal also has opposing 'c' axis crystal faces normal to a 'c' axis of the crystal, and opposing 'a' axis crystal faces that are normal to an 'a' axis of the crystal. A mount supports the crystal and serves as a heat sink. A path is created to conduct heat from the crystal through the 'c' faces, while the 'a' faces are thermally isolated from heat conduction. The thermal lens ellipticity is controlled in order to produce a round, diffraction limited gaussian beam suitable for applications that require a high power, good quality beam from a simple, reliable laser source.