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AssigneeRaytheon Company
InventorsDelmar Barker, William Owens, Ross Rosenwald, Nitesh Shah, Hao Xin
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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.
A thermally powered terahertz (THz) radiation source comprising a photonic crystal (PC) structure that generates a sharp emission peak in the THz region of a modified Planck spectrum using heat as the energy source.
A thermally powered THz radiation source, comprising:
A thermally powered THz radiation source, comprising:
A thermally powered THz radiation source, comprising:
Dependencies are inferred from the claim text.