Cylindrical periodic surface lattice as a metadielectric : concept of a surface-field Cherenkov source of coherent radiation
作者： I. V. Konoplev , A. J. MacLachlan , C. W. Robertson , A. W. Cross , A. D. R. Phelps
DOI: 10.1103/PHYSREVA.84.013826
关键词:
摘要: A two-dimensional (2D), cylindrical, periodic surface lattice (PSL) forming a field cavity is considered. The created by introducing 2D perturbations on the inner of cylindrical waveguide. PSL facilitates resonant coupling and near cutoff volume fields, leading to formation high-Q eigenmode. eigenmode described investigated using modal approach, considering model waveguide partially loaded with metadielectric. By PSL-based cavity, concept high-power, 0.2-THz Cherenkov source developed. It shown that if satisfies certain defined conditions, single-mode operation observed.
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