Tunable, superconducting, surface-emitting teraherz source

Welp, Ulrich; Koshelev, Alexei E; Gray, Kenneth E; Kwok, Wai-Kwong; Vlasko-Vlasov, Vitalii

Title: Tunable, superconducting, surface-emitting teraherz source

Patent · Tue Oct 27 00:00:00 EDT 2009

OSTI ID:988985

Welp, Ulrich ^[1]; Koshelev, Alexei E ^[2]; Gray, Kenneth E ^[3]; Kwok, Wai-Kwong ^[3]; Vlasko-Vlasov, Vitalii ^[4]

Lisle, IL
Bolingbrook, IL
Evanston, IL
Downers Grove, IL

A compact, solid-state THz source based on the driven Josephson vortex lattice in a highly anisotropic superconductor such as Bi.sub.2Sr.sub.2CaCu.sub.2O.sub.8 that 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 Bi.sub.2Sr.sub.2CaCu.sub.2O.sub.8 sample. Steering of the emitted THz beam is accomplished by tuning the Josephson vortex spacing around the grating period using a superimposed magnetic control field.

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Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC02-06CH11357

Assignee:: UChicago Argonne, LLC (Chicago, IL)

Patent Number(s):: 7,610,071

Application Number:: 11/728,615

OSTI ID:: 988985

Country of Publication:: United States

Language:: English

References (18)

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