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Title: Photoconductive device with optical concentrator

Patent ·
OSTI ID:1568533

A photonic device having wide bandgap (WBG) materials which change electrical behaviors in response to low-intensity light is disclosed. The device comprises an optical waveguide located in an optical path of light to receive the light and to spatially confine the received light as guided light at a higher optical intensity than the received light; a wide bandgap (WBG) material located in an optical path of the guided light output by the optical waveguide; and two electrodes formed at two different locations on the WBG material to provide two electrical contacts of an electrical path within the WBG material, wherein the WBG material exhibits an electrical conductivity that varies with a level of the guided light output by the optical waveguide to turn on or off the electrical path between the two electrodes.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC52-07NA27344
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
Patent Number(s):
10,333,010
Application Number:
15/488,058
OSTI ID:
1568533
Resource Relation:
Patent File Date: 04/14/2017
Country of Publication:
United States
Language:
English

References (6)

High voltage photo switch package module patent February 2014
High-voltage switch having series-connected light-responsive semiconductor elements and light concentrating means for the semiconductor elements patent November 1994
Compact optical transconductance varistor patent-application December 2013
System and method of modulating electrical signals using photoconductive wide bandgap semiconductors as variable resistors patent October 2013
Multi-Sided Optical Waveguide-Fed Photoconductive Switches patent-application July 2015
Photoconductive switch module and manufacturing method thereof patent July 2004

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