Optical theorem and forward scattering sum rule for periodic structures
Författare
Summary, in English
Based on energy conservation, an optical theorem is constructed for a slab having an arbitrary periodic microstructure in a plane. A sum rule for low pass structures is derived using analytic properties of Herglotz functions based on causality and passivity. The sum rule relates the extinction cross section to the static polarizability per unit cell, and quantifies the interaction between the slab and electromagnetic fields possible over all wavelengths. The results are illustrated with several numerical and experimental examples.
Publiceringsår
2011
Språk
Engelska
Publikation/Tidskrift/Serie
Technical Report LUTEDX/(TEAT-7213)/1-17/(2011)
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Dokumenttyp
Rapport
Förlag
[Publisher information missing]
Ämne
- Electrical Engineering, Electronic Engineering, Information Engineering
Nyckelord
- sum rule
- Herglotz function
- Optical theorem
- forward scattering
- periodic structures
- metamaterial
Status
Published
Report number
TEAT-7213
Forskningsgrupp
- Electromagnetic theory