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:
Jan. 17, 2023
Filed:
Jul. 09, 2021
Lawrence Livermore National Security, Llc, Livermore, CA (US);
Michael Rushford, Livermore, CA (US);
Adam Conway, Livermore, CA (US);
Lars F. Voss, Livermore, CA (US);
Joseph D. Schneider, Livermore, CA (US);
Tammy Chang, Livermore, CA (US);
Caitlin Anne Chapin, Livermore, CA (US);
John Berns Lancaster, Livermore, CA (US);
Steve Hawkins, Livermore, CA (US);
Victor Valeryevich Khitrov, Livermore, CA (US);
LAWRENCE LIVERMORE NATIONAL SECURITY, LLC, Livermore, CA (US);
Abstract
Methods and devices for illuminating a photoconductive switch consisting of an optically actuated photoconductive material situated between two electrodes are described. Light from a light source is coupled to an optical fiber, which is attached to a frustum, the other side of which is proximate to the photoconductive switch. Light from the optical fiber enters the frustum, spreads out, and enters the photoconductive switch via the top-side electrode. Some of the light is absorbed, while the remaining light reflects off the bottom-side electrode, travels back through the photoconductive switch, and any unabsorbed light reenters the frustum. The geometry of the frustum is configured such that most of the light reflects back into the switch itself with only a negligible fraction escaping from the optical fiber, which advantageously results in near total utilization of the light.