Theory of spoof plasmons in real metals

Anastasia Rusina; Maxim Durach; Mark I. Stockman

doi:10.1117/12.859904

10 September 2010 Theory of spoof plasmons in real metals

Anastasia Rusina, Maxim Durach, Mark I. Stockman

Proceedings Volume 7757, Plasmonics: Metallic Nanostructures and Their Optical Properties VIII; 77572R (2010) https://doi.org/10.1117/12.859904
Event: SPIE NanoScience + Engineering, 2010, San Diego, California, United States

Abstract

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.

Citation Download Citation

Anastasia Rusina, Maxim Durach, and Mark I. Stockman "Theory of spoof plasmons in real metals", Proc. SPIE 7757, Plasmonics: Metallic Nanostructures and Their Optical Properties VIII, 77572R (10 September 2010); https://doi.org/10.1117/12.859904

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