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:
May. 12, 2026
Filed:
Mar. 04, 2022
Lawrence Livermore National Security, Llc, Livermore, CA (US);
Stephen Anthony Payne, Castro Valley, CA (US);
Raymond Beach, Livermore, CA (US);
Jean-Michel Di Nicola, Livermore, CA (US);
Alvin Erlandson, Livermore, CA (US);
John Heebner, San Ramon, CA (US);
Jeremy Lusk, Livermore, CA (US);
William A. Molander, Livermore, CA (US);
Samuel Edward Schrauth, Livermore, CA (US);
Jen Nan Wong, Fremont, CA (US);
Lawrence Livermore National Security, LLC, Livermore, CA (US);
Abstract
An optical amplifier comprises a gain medium having an input surface and an output surface wherein the output surface is larger than the input surface. The gain medium may be frustum shaped. The optical amplifier includes a negative diverging lens to receive an extraction laser beam and to cause the laser beam to expand as the beam passes through the gain medium. The amplifier further comprises a positive collimating lens configured to receive the expanding amplified beam and reduce the divergence. The gain medium can be pumped by counter-propagating radiation. The fluence of the laser beam within the gain medium is configured to be near constant along the length of the gain medium and may be within 1.5-2.0 F. The gain medium may be doped with dopant to provide gain, with larger concentration of dopants proximal the input surface and smaller concentration proximal the output surface.