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:
May. 11, 2010
Filed:
Oct. 26, 2009
Ulrich Welp, Lisle, IL (US);
Alexei E. Koshelev, Bolingbrook, IL (US);
Kenneth E. Gray, Naperville, IL (US);
Wai-kwong Kwok, Evanston, IL (US);
Vitalii Vlasko-vlasov, Downers Grove, IL (US);
Ulrich Welp, Lisle, IL (US);
Alexei E. Koshelev, Bolingbrook, IL (US);
Kenneth E. Gray, Naperville, IL (US);
Wai-Kwong Kwok, Evanston, IL (US);
Vitalii Vlasko-Vlasov, Downers Grove, IL (US);
Uchicago Argonne, LLC, Chicago, IL (US);
Abstract
A compact, solid-state THz source based on the driven Josephson vortex lattice in a highly anisotropic superconductor such as BiSrCaCuOthat allows cw emission at tunable frequency. A second order metallic Bragg grating is used to achieve impedance matching and to induce surface emission of THz-radiation from a BiSrCaCuOsample. Steering of the emitted THz beam is accomplished by tuning the Josephson vortex spacing around the grating period using a superimposed magnetic control field.