Optical: systems and elements – Optical frequency converter
Reexamination Certificate
2008-03-04
2008-03-04
Connelly-Cushwa, Michelle R. (Department: 2874)
Optical: systems and elements
Optical frequency converter
C359S330000
Reexamination Certificate
active
07339718
ABSTRACT:
A method for generating THz radiation comprises illuminating a semiconductor crystal with an optical pulse train. The semiconductor crystal comprises alternating parallel crystal domains, with each domain having a crystal orientation inverted with respect to adjacent domains. The optical pulse train propagates substantially perpendicularly relative to domain boundaries in the semiconductor crystal. The THz radiation is generated from the optical pulse train by optical down-conversion mediated by the semiconductor crystal. Optical path lengths through the crystal domains at least in part determine a frequency of the generated THz radiation. THz generation efficiency may be enhanced by placing the semiconductor crystal within an external resonant cavity, by placing the semiconductor crystal within a laser cavity, or by placing the semiconductor crystal within an OPO cavity. The semiconductor crystal may comprise zinc-blende, III-V, or II-VI semiconductor.
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Fejer Martin M.
Kozlov Vladimir G.
Lee Yun-Shik
Vodopyanov Konstantin L.
Alavi David S.
Connelly-Cushwa Michelle R.
Microtech Instruments Inc
State of Oregon acting by and though Oregon State Board of Highe
The Board of Trustees of the Leland Stanford Junior University
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