Rayleigh and Wood anomalies in the diffraction of light from a perfectly conducting reflection grating. (6th January 2016)

• Record Type: Journal Article
• Authors: Maradudin, A A; Simonsen, I; Polanco, J; Fitzgerald, R M
• Is Part Of: Journal of optics. Volume 18:Number 2(2016:Feb.)
• Publication Date: 2016-01-06
• Subjects: Rayleigh and Wood anomalies -- diffraction grating -- electromagnetic scattering; Optics -- Periodicals; 535.05
• DOI: 10.1088/2040-8978/18/2/024004
• Languages: English
• ISSNs: 2040-8978

Abstract

Abstract: 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.