title: High-order modes in cavity-resonator-integrated guided-mode resonance filters (CRIGFs).
abstract: Cavity-resonator-integrated guided-mode resonance filters (CRIGFs) are optical filters based on weak coupling by a grating between a free-space propagating optical mode and a guided mode, like guided-mode resonance filters (GMRFs). As compared to GMRFs they offer narrowband reflection with small aperture and high angular acceptance. We report experimental characterization and theoretical modeling of unexpected high-order reflected modes in such devices. Using coupled-mode modeling and moiré analysis we provide physical insight on key mechanisms ruling CRIGF properties. This model could serve as a simple and efficient framework to design new reflectors with tailored spatial and spectral modal reflectivities.
authors.forename: R
authors.initials: R
authors.lastname: Laberdesque
authors.forename: O
authors.initials: O
authors.lastname: Gauthier-Lafaye
authors.forename: H
authors.initials: H
authors.lastname: Camon
authors.forename: A
authors.initials: A
authors.lastname: Monmayrant
authors.forename: M
authors.initials: M
authors.lastname: Petit
authors.forename: O
authors.initials: O
authors.lastname: Demichel
authors.forename: B
authors.initials: B
authors.lastname: Cluzel