The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 18, 2006
Filed:
Oct. 07, 2004
Delmar L. Barker, Tucson, AZ (US);
William R. Owens, Tucson, AZ (US);
Ross D. Rosenwald, Tucson, AZ (US);
Nitesh N. Shah, Tucson, AZ (US);
Hao Xin, Tucson, AZ (US);
Delmar L. Barker, Tucson, AZ (US);
William R. Owens, Tucson, AZ (US);
Ross D. Rosenwald, Tucson, AZ (US);
Nitesh N. Shah, Tucson, AZ (US);
Hao Xin, Tucson, AZ (US);
Raytheon Company, Waltham, MA (US);
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.