Angular Dependence of the Radiation Power of a Josephson STAR-emitter

    Authors

    R. A. Klemm;K. Kadowaki

    Comments

    Authors: contact us about adding a copy of your work at [email protected]

    Abbreviated Journal Title

    J. Supercond. Nov. Magn

    Keywords

    Terahertz radiation; Josephson junctions; EMISSION; JUNCTION; Physics, Applied; Physics, Condensed Matter

    Abstract

    We calculate the angular dependence of the power of stimulated terahertz amplified radiation (STAR) emitted from a dc voltage applied across a stack of intrinsic Josephson junctions. During coherent emission, we assume that a spatially uniform ac Josephson current density in the stack acts as a surface electric current density antenna source, and the cavity features of the stack are contained in a magnetic surface current density source. A superconducting substrate acts as a perfect magnetic conductor with H(parallel to,ac) = 0 on its surface. The combined results agree very well with recent experimental observations. Existing Bi(2)Sr(2)CaCu(2)O(8+delta) crystals atop perfect electric conductors could have Josephson STAR-emitter power in excess of 5 mW, acceptable for many device applications.

    Journal Title

    Journal of Superconductivity and Novel Magnetism

    Volume

    23

    Issue/Number

    5

    Publication Date

    1-1-2010

    Document Type

    Article

    Language

    English

    First Page

    613

    Last Page

    616

    WOS Identifier

    WOS:000278546800011

    ISSN

    1557-1939

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