Study of coherent and continuous terahertz wave emission in equilateral triangular mesas of superconducting Bi2Sr2CaCu2O8+delta intrinsic Josephson junctions

    Authors

    K. Delfanazari; H. Asai; M. Tsujimoto; T. Kashiwagi; T. Kitamura; T. Yamamoto; M. Sawamura; K. Ishida; M. Tachiki; R. A. Klemm; T. Hattori;K. Kadowaki

    Comments

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    Abbreviated Journal Title

    Physica C

    Keywords

    Intrinsic Josephson junctions; Terahertz wave; Cavity resonance; RADIATION; POWER; Physics, Applied

    Abstract

    We report on intense and coherent terahertz (THz) electromagnetic (EM) waves emitted from equilateral triangular mesa structures of the intrinsic Josephson junctions (IJJs) in single crystalline high-T-c superconducting Bi2Sr2CaCu2O8+delta. The focused ion beam milling technique is used for mesa fabrication. THz radiation is observed when the emission frequency is in the vicinity of the primary cavity resonance frequency determined by the mesa geometry. We also investigated numerically the THz radiation from such mesas using the finite difference time domain method. We found an apparent EM mode similar to the known TM(1, 0) = TM(0, 1) cavity mode during the THz emission. (C) 2012 Elsevier B.V. All rights reserved.

    Journal Title

    Physica C-Superconductivity and Its Applications

    Volume

    491

    Publication Date

    1-1-2013

    Document Type

    Article; Proceedings Paper

    Language

    English

    First Page

    16

    Last Page

    19

    WOS Identifier

    WOS:000320597700005

    ISSN

    0921-4534

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