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Application of Yb:YAG short pulse laser system

United States Patent

July 6, 2004
View the Complete Patent at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
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.
Erbert; Gaylen V. (Livermore, CA), Biswal; Subrat (Laurel, MD), Bartolick; Joseph M. (Livermore, CA), Stuart; Brent C. (Livermore, CA), Crane; John K. (Pleasanton, CA), Telford; Steve (Livermore, CA), Perry; Michael D. (Poway, CA)
The Regents of the University of California (Oakland, CA)
10/ 118,292
April 8, 2002
The United States Government has rights in this invention pursuant to Contract No. W-7405-ENG-48 between the United States Department of Energy and the University of California for the operation of Lawrence Livermore National Laboratory.