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Title: Tunable, superconducting, surface-emitting teraherz source

Abstract

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.

Inventors:
 [1];  [2];  [3];  [3];  [4]
  1. Lisle, IL
  2. Bolingbrook, IL
  3. Evanston, IL
  4. Downers Grove, IL
Issue Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
988985
Patent Number(s):
7610071
Application Number:
11/728,615
Assignee:
UChicago Argonne, LLC (Chicago, IL)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Welp, Ulrich, Koshelev, Alexei E, Gray, Kenneth E, Kwok, Wai-Kwong, and Vlasko-Vlasov, Vitalii. Tunable, superconducting, surface-emitting teraherz source. United States: N. p., 2009. Web.
Welp, Ulrich, Koshelev, Alexei E, Gray, Kenneth E, Kwok, Wai-Kwong, & Vlasko-Vlasov, Vitalii. Tunable, superconducting, surface-emitting teraherz source. United States.
Welp, Ulrich, Koshelev, Alexei E, Gray, Kenneth E, Kwok, Wai-Kwong, and Vlasko-Vlasov, Vitalii. Tue . "Tunable, superconducting, surface-emitting teraherz source". United States. https://www.osti.gov/servlets/purl/988985.
@article{osti_988985,
title = {Tunable, superconducting, surface-emitting teraherz source},
author = {Welp, Ulrich and Koshelev, Alexei E and Gray, Kenneth E and Kwok, Wai-Kwong and Vlasko-Vlasov, Vitalii},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2009},
month = {10}
}

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Works referenced in this record:

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Vortex-flow electromagnetic emission in stacked intrinsic Josephson junctions
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