Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Reexamination Certificate
2006-07-18
2006-07-18
Nguyen, Kiet T. (Department: 2881)
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
C250S492300, C250S493100, C315S505000
Reexamination Certificate
active
07078697
ABSTRACT:
Although THz radiation is naturally emitted by hot objects, the intensity levels are too weak to be considered as a practical THz source for most applications. Photonic crystal structures are used to modify the thermal emission peak associated with the standard Planck blackbody spectral distribution so that the THz region is dramatically enhanced. The photonic crystal core is preferably combined with variable Q defect cavities and a wave guiding and power combining structure so that the radiated THz energy is efficiently collected and directed to an output antenna. Higher THz emissions are realized by embedding a finer (higher frequency) photonic crystal structure within a coarser (lower frequency) structure.
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Barker Delmar L.
Owens William R.
Rosenwald Ross D.
Shah Nitesh N.
Xin Hao
Finn, Esq. Thomas J.
Gunther John E.
Nguyen Kiet T.
Raytheon Company
Smith, II Johnnie L.
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