Radiant energy – Radiant energy generation and sources – With radiation modifying member
Reexamination Certificate
2011-04-05
2011-04-05
Berman, Jack I (Department: 2881)
Radiant energy
Radiant energy generation and sources
With radiation modifying member
C257S013000
Reexamination Certificate
active
07919764
ABSTRACT:
A method and device for generating terahertz radiation comprising a polar crystal material layer operative to emit terahertz radiation; the polar crystal material layer comprising a plurality of stacking faults; the stacking faults lying substantially perpendicular to the polar axis and forming boundaries at which the internal electric polarization terminates leading to charges accumulating at the boundaries, and creation of internal electric fields oriented along the polar axis; a pulsed radiation source for creating photogenerated carriers in the polar crystal material; whereby the photogenerated carriers accelerate in the internal electric fields associated with the termination of the internal electric polarization by the stacking faults to thereby generate terahertz radiation.
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Metcalfe Grace D.
Shen Paul
Wraback Michael
Anderson Lawrence E.
Berman Jack I
The United States of America as represented by the Secretary of
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