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PHOTOCONDUCTIVE SWITCH WITH IMPROVED LIFE SPAN

United States Patent Application

20140263979
A1
View the Complete Application at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
Methods, devices and systems enhance the operation and lifespan of photoconductive switches. A photoconductive switch is described that includes a photoconductive material with a first face and a second face, as well as a first contact and a second contact that are positioned above a top surface and below a bottom surface of the photoconductive material, respectively. The first and the second contacts enable establishment of an electric field across the photoconductive material, where the electric field includes enhancement regions around the periphery of the first and second contacts. Further, the photoconductive material is dimensioned relative to the first and the second contacts, as well as first radiation extent and divergence, to allow a first incident radiation that enters the photoconductive material through the first face to propagate through the photoconductive material toward the second face and reach one or more regions of electric field enhancement with substantially reduced intensity.
Guethlein, Gary (Livermore, CA)
LAWRENCE LIVERMORE NATIONAL SECURITY, LLC (Livermore CA)
13/ 830,741
March 14, 2013
FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0001] The United States Government has rights in this invention pursuant to Contract No. DE-AC52-07NA27344 between the United States Department of Energy and Lawrence Livermore National Security, LLC for the operation of Lawrence Livermore National Laboratory.