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

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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.

LanguageEnglish
Article number013826
Number of pages12
JournalPhysical Review A
Volume84
Issue number1
DOIs
Publication statusPublished - 25 Jul 2011

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coherent radiation
cavities
waveguides
Q factors
cut-off
perturbation

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

Cite this

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title = "Cylindrical periodic surface lattice as a metadielectric: concept of a surface-field Cherenkov source of coherent radiation",
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.",
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",
author = "Konoplev, {I. V.} and MacLachlan, {A. J.} and Craig Robertson and Cross, {A. W.} and Phelps, {A. D. R.}",
year = "2011",
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T2 - Physical Review A - Atomic, Molecular, and Optical Physics

AU - Konoplev, I. V.

AU - MacLachlan, A. J.

AU - Robertson, Craig

AU - Cross, A. W.

AU - Phelps, A. D. R.

PY - 2011/7/25

Y1 - 2011/7/25

N2 - 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.

AB - 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.

KW - band gap structures

KW - plasmon polaritons

KW - excitation

KW - two dimensional Bragg

KW - 2-D Bragg

KW - periodic surface lattice

KW - Cherenkov maser

KW - metadielectric

KW - high-Q cavity

KW - relativistic electron beam tubes

KW - electron beams

KW - vacuum electronics

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U2 - 10.1103/PhysRevA.84.013826

DO - 10.1103/PhysRevA.84.013826

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JO - Physical Review A - Atomic, Molecular, and Optical Physics

JF - Physical Review A - Atomic, Molecular, and Optical Physics

SN - 1050-2947

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