Applied Physics A

, Volume 100, Issue 2, pp 375–378 | Cite as

Theory of spoof plasmons in real metals

  • Anastasia Rusina
  • Maxim Durach
  • Mark I. StockmanEmail author


In this Letter we develop a theory of spoof plasmons propagating on real metals perforated with planar periodic grooves. Deviation from the spoof plasmons on perfect conductor due to finite skin depth has been analytically described. This allowed us to investigate important propagation characteristics of spoof plasmons such as quality factor and propagation length as the function of the geometrical parameters of the structure. We have also considered THz field confinement by adiabatic increase of the depth of the grooves. It is shown that the finite skin depth limits the propagation length of spoof plasmons as well as a possibility to localize THz field. Geometrical parameters of the structure are found which provide optimal guiding and localization of THz energy.


Surface Plasmon Polaritons Propagation Length Skin Depth Corrugate Surface Perfect Conductor 
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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Anastasia Rusina
    • 1
  • Maxim Durach
    • 1
  • Mark I. Stockman
    • 1
    Email author
  1. 1.Department of Physics and AstronomyGeorgia State UniversityAtlantaUSA

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