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
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 |
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| ID code: | 35424 |
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| 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 |
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| Subjects: | Science > Physics |
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| Department: | Faculty of Science > Physics |
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| Related URLs: | |
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| Depositing user: | Pure Administrator |
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| Date Deposited: | 01 Nov 2011 05:22 |
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| Last modified: | 06 Oct 2012 09:38 |
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| URI: | http://strathprints.strath.ac.uk/id/eprint/35424 |
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