Waves on Subwalength Metallic Surfaces: A Microscopic View Point
At a microscopic level, the electromagnetic properties of subwavelength metallic surfaces are due to two kinds of elementary distinct waves, the surface plasmon polaritons and the quasi-cylindrical waves. These waves are launched on the metal surface by the scattering of the incident field on the subwavelength indentations, and are subsequently scattered by adjacent indentations to ultimately form a complex surface charge pattern that is responsible of various fascinating phenomena. We review the fundamental properties that govern these waves and discuss their impacts in the Wood anomaly of metallic gratings, a phenomenon historically attributed to surface plasmon polaritons since the milestone work by U. Fano .
KeywordsWood anomalies Surface plasmon Extraordinary optical transmission Theory of metallic grating Quasi-cylindrical wave Norton wave Microscopic model Plasmonic surfaces
Haitao Liu acknowledges financial supports from the National Natural Science Foundation of China (No. 10804057), from the Cultivation Fund of the Key Scientific and Technical Innovation Project, Ministry of Education of China (No. 708021), from the 973 Project (No. 2007CB307001), and from the Natural Science Foundation of Tianjin (No. 11JCZDJC15400). Jean Claude Rodier, Lionel Aigouy, Xiaoyan Yang, Jacques Giérak, Eric Bourhis, Christophe Sauvan, Stéphane Collin, Lionel Jacobowiez and Jean Paul Hugonin are acknowledged for fruitful discussions.
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