|Title:||Plasmonic waves allow perfect transmission through sub-wavelength metallic gratings|
|Abstract:||We perform a mathematical analysis of the transmission properties of a metallic layer with narrow slits. Our analysis is inspired by recent measurements and numerical calculations that report an unexpected high transmission coefficient of such a structure in a subwavelength regime. We analyze the time harmonic Maxwell’s equations in the H-parallel case for a fixed incident wavelength. Denoting by ? the typical size of the grated structure, we analyze the limit n -> 0 and derive effective equations that take into account the role of plasmonic waves. We obtain a formula for the effective transmission coefficient.|
|Subject Headings:||effective tensor|
|Appears in Collections:||Preprints der Fakultät für Mathematik|
Schweizer, Ben Prof. Dr.
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