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Cylindrical periodic surface lattice as a metadielectric : concept of a surface-field Cherenkov source of coherent radiation

Konoplev, I. V. and MacLachlan, A. J. and Robertson, Craig and Cross, A. W. and Phelps, A. D. R. (2011) Cylindrical periodic surface lattice as a metadielectric : concept of a surface-field Cherenkov source of coherent radiation. Physical Review A, 84 (1). -. ISSN 1050-2947

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    Abstract

    A two-dimensional (2D), cylindrical, periodic surface lattice (PSL) forming a surface field cavity is considered. The lattice is created by introducing 2D periodic perturbations on the inner surface of a cylindrical waveguide. The PSL facilitates a resonant coupling of the surface and near cutoff volume fields, leading to the formation of a high-Q cavity eigenmode. The cavity eigenmode is described and investigated using a modal approach, considering the model of a cylindrical waveguide partially loaded with a metadielectric. By using a PSL-based cavity, the concept of a high-power, 0.2-THz Cherenkov source is developed. It is shown that if the PSL satisfies certain defined conditions, single-mode operation is observed.

    Item type: Article
    ID code: 35424
    Keywords: band gap structures, plasmon polaritons, excitation, two dimensional Bragg, 2-D Bragg, periodic surface lattice, Cherenkov maser, metadielectric, high-Q cavity, relativistic electron beam tubes, electron beams, vacuum electronics, Physics, Atomic and Molecular Physics, and Optics
    Subjects: Science > Physics
    Department: Faculty of Science > Physics
    Related URLs:
    Depositing user: Pure Administrator
    Date Deposited: 01 Nov 2011 05:22
    Last modified: 27 Mar 2014 11:16
    URI: http://strathprints.strath.ac.uk/id/eprint/35424

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