Rayleigh and Wood anomalies in the diffraction of light from a perfectly conducting reflection grating
Journal article, Peer reviewed
Accepted version
Permanent lenke
http://hdl.handle.net/11250/2462877Utgivelsesdato
2016Metadata
Vis full innførselSamlinger
- Institutt for fysikk [2653]
- Publikasjoner fra CRIStin - NTNU [37219]
Sammendrag
By means of a modal method we have calculated the angular dependence of the reflectivity and the efficiencies of several other diffracted orders of a perfectly conducting lamellar reflection grating illuminated by p-polarized light. These dependencies display the signatures of Rayleigh and Wood anomalies, usually associated with diffraction from a metallic grating. The Wood anomalies here are caused by the excitation of the surface electromagnetic waves supported by a periodically corrugated perfectly conducting surface, whose dispersion curves in both the nonradiative and radiative regions of the frequency-wavenumber plane are calculated.