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:
Jul. 06, 2004
Filed:
Apr. 08, 2002
Gaylen V. Erbert, Livermore, CA (US);
Subrat Biswal, Laurel, MD (US);
Joseph M. Bartolick, Livermore, CA (US);
Brent C. Stuart, Livermore, CA (US);
John K. Crane, Pleasanton, CA (US);
Steve Telford, Livermore, CA (US);
Michael D. Perry, Poway, CA (US);
The Regents of the University of California, Oakland, CA (US);
Abstract
A diode pumped, high power (at least 20W), short pulse (up to 2 ps), chirped pulse amplified laser using Yb:YAG as the gain material is employed for material processing. Yb:YAG is used as the gain medium for both a regenerative amplifier and a high power 4-pass amplifier. A single common reflective grating optical device is used to both stretch pulses for amplification purposes and to recompress amplified pulses before being directed to a workpiece.