Photonic modes of a chain of nanocylinders by the embedding method

The photonic band structure of a linear array of metallic nanocylinders is calculated using the embedding method. The coupling to the vacuumon eitherside of the array is treated exactly, allowing the continuum states and plasmon broadening above the light-line to be treated accurately. In addition t...

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Veröffentlicht in:Journal of the Optical Society of America. B, Optical physics Optical physics, 2013-06, Vol.30 (6), p.1755-1764
Hauptverfasser: Giannakis, Nikos A., Inglesfield, John E., Jastrzebski, Adam K., Young, Paul R.
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Sprache:eng
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Zusammenfassung:The photonic band structure of a linear array of metallic nanocylinders is calculated using the embedding method. The coupling to the vacuumon eitherside of the array is treated exactly, allowing the continuum states and plasmon broadening above the light-line to be treated accurately. In addition to the plasmon bands, which broaden at larger cylinder radius, there are two guided modes, with the character of surface plasmon polaritons. These split off the light-line at small wave-vector, becoming almost dispersionless as they enter the plasmon bands. The electric fields associated with the modes are calculated, and their symmetries are discussed.
ISSN:0740-3224
1520-8540
DOI:10.1364/JOSAB.30.001755