Localised plasmons on the aperture of a channel in a metal layer
| Autor: | Tatiana I Kuznetsova, Nikolai A Raspopov |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Electromagnetic field
Physics Condensed matter physics Field (physics) Aperture Statistical and Nonlinear Physics Dielectric Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Transformation (function) Dimension (vector space) Electrical and Electronic Engineering Plasmon Communication channel |
| Zdroj: | Quantum Electronics. 42:87-94 |
| ISSN: | 1468-4799 1063-7818 |
| DOI: | 10.1070/qe2012v042n01abeh014769 |
| Popis: | Optical fields are studied in a planar channel inside a metal layer taking into account a complex dielectric function of the metal. An influence of an exit aperture on the incident field propagating along the channel is considered; a mathematical approach is developed for analysing the effect. Attention is paid to the fact that the incident field should not be assumed a priori known if the wave transformation at the exit is neglected. For a chosen dimension of the channel and parameters of a metal, the coefficients for the lowest mode transformation into higher modes are found. The spatial field structure at the exit aperture and on the exit surface of a metal is studied. Existence of domains possessing an anomalously high intensity is revealed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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