Broadly Tunable Subterahertz Emission from Internal Branches of the Current-Voltage Characteristics of Superconducting Bi2Sr2CaCu2O8+delta Single Crystals

    Authors

    M. Tsujimoto; T. Yamamoto; K. Delfanazari; R. Nakayama; T. Kitamura; M. Sawamura; T. Kashiwagi; H. Minami; M. Tachiki; K. Kadowaki;R. A. Klemm

    Comments

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    Abbreviated Journal Title

    Phys. Rev. Lett.

    Keywords

    JOSEPHSON-JUNCTIONS; RADIATION; Physics, Multidisciplinary

    Abstract

    Continuous, coherent subterahertz radiation arises when a dc voltage is applied across a stack of the many intrinsic Josephson junctions in a Bi2Sr2CaCu2O8+delta single crystal. The active junctions produce an equal number of I-V characteristic branches. Each branch radiates at a slightly tunable frequency obeying the Josephson relation. The overall output is broadly tunable and nearly independent of heating effects and internal cavity frequencies. Amplification by a surrounding external cavity to allow for the development of a useful high-power source is proposed.

    Journal Title

    Physical Review Letters

    Volume

    108

    Issue/Number

    10

    Publication Date

    1-1-2012

    Document Type

    Article

    Language

    English

    First Page

    5

    WOS Identifier

    WOS:000301343600010

    ISSN

    0031-9007

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