Resonance transmission or absorption in deep gratings explained by magnetic polaritons

Liping Wang, Z. M. Zhang

Research output: Contribution to journalArticle

77 Citations (Scopus)

Abstract

Resonance transmission or absorption has been observed in metallic deep gratings and previously characterized as coupled surface plasmon polaritons or Fabry-Ṕrot-like resonances. This letter provides a quantitative explanation of this phenomenon by means of localized magnetic polaritons. Rigorous coupled-wave analysis is used to predict the spectral transmittance and absorptance of subwavelength gratings. The resonance condition is compared with that predicted by the LC circuit model. Some geometric effects that cannot be explained by previous models can be well understood in terms of magnetic polaritons. The insight gained from this study may facilitate future design and applications of subwavelength periodic structures.

Original languageEnglish (US)
Article number111904
JournalApplied Physics Letters
Volume95
Issue number11
DOIs
StatePublished - 2009
Externally publishedYes

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polaritons
gratings
LC circuits
absorptance
transmittance

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Resonance transmission or absorption in deep gratings explained by magnetic polaritons. / Wang, Liping; Zhang, Z. M.

In: Applied Physics Letters, Vol. 95, No. 11, 111904, 2009.

Research output: Contribution to journalArticle

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