Sum rule for the transmission cross section of apertures in thin opaque screens
Author
Summary, in English
Extraordinary transmission through subwavelength apertures is usually observed in a narrow bandwidth range, and the transmission outside this range is low, in agreement with classical results. The analysis presented here is based on the Babinet's principle and hence scattering by the complementary structure, where the apertures are replaced by finite scatterers. It is shown that the transmission cross section of a set of apertures in an opaque screen satisfies a sum rule that relates the transmission cross section integrated over all wavelengths with the polarizability of the complementary structure as defined by Babinet's principle. The theoretical results are illustrated with numerical examples.
Publishing year
2009
Language
English
Pages
2003-2005
Publication/Series
Optics Letters
Volume
34
Issue
13
Document type
Journal article (letter)
Publisher
Optical Society of America
Topic
- Electrical Engineering, Electronic Engineering, Information Engineering
Status
Published
Research group
- Electromagnetic theory
ISBN/ISSN/Other
- ISSN: 0146-9592