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Proceedings Paper

Submillimeter-wave detection and mixing experiments using high-temperature Josephson junctions
Author(s): Jian Chen; Estuko Kobayashi; Hiroaki Myoren; Kensuke Nakajima; Tsutomu Yamashita; Sven Linzen; Frank Schmidl; Paul Seidel
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Paper Abstract

Using high temperature grain boundary Josephson junctions (GBJJs) made of YBa2Cu3O7-(delta ) (YBCO) deposited across silicon bicrystal boundary, we successfully demonstrated direct detection at wavelength as short as 118.8 micrometer (frequency of 2.525THz) and the operation temperature up to 70 K. Radiation from a far infrared (FIR) laser was coupled to the junction, via a TPX plano convex lens and a high resistivity Si hyperhemispherical lens. The response at wavelength of 183.4 micrometer was obtained for the YBCO GBJJs on MgO bicrystal substrates. Also, investigated are the effects of response on external DC magnetic fields and polarization of electromagnetic waves as well as the harmonic mixing properties.

Paper Details

Date Published: 13 November 1998
PDF: 6 pages
Proc. SPIE 3465, Millimeter and Submillimeter Waves IV, (13 November 1998); doi: 10.1117/12.331166
Show Author Affiliations
Jian Chen, Tohoku Univ. (Japan) and Japan Science and Technology Corp. (Japan)
Estuko Kobayashi, Tohoku Univ. (Japan)
Hiroaki Myoren, Tohoku Univ. (Japan) and Japan Science and Technology Corp. (Japan)
Kensuke Nakajima, Tohoku Univ. (Japan) and Japan Science and Technology Corp. (Japan)
Tsutomu Yamashita, Tohoku Univ. (Japan) and Japan Science and Technology Corp. (Japan)
Sven Linzen, Friedrich-Schiller-Univ. Jena (Germany)
Frank Schmidl, Friedrich-Schiller-Univ. Jena (Germany)
Paul Seidel, Friedrich-Schiller-Univ. Jena (Germany)

Published in SPIE Proceedings Vol. 3465:
Millimeter and Submillimeter Waves IV
Mohammed N. Afsar, Editor(s)

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