title: Modal method for classical diffraction by slanted lamellar gratings.
abstract: We consider lamellar gratings made of dielectric or lossy materials used in classical diffraction mounts. We show how the modal diffraction formulation may be generalized to deal with slanted lamellar gratings and illustrate the accuracy and versatility of the new method through study of highly slanted gratings in a homogenization limit. We also comment on the completeness of the eigenmode basis and present tests enabling this completeness to be verified numerically.
authors.affiliation: Centre for Ultrahigh Bandwidth Devices for Optical Systems, School of Physics, University of Sydney, NSW 2006, Australia.
authors.forename: Sam
authors.initials: S
authors.lastname: Campbell
authors.forename: Lindsay C
authors.initials: LC
authors.lastname: Botten
authors.forename: Ross C
authors.initials: RC
authors.lastname: McPhedran
authors.forename: C Martijn
authors.initials: CM
authors.lastname: de Sterke