Perfect Diffraction using All-Dielectric Bianisotropic Metagratings

A bianisotropic metamolecule supporting multiple resonances of appropriate symmetry can be used to assemble a perfectly diffractive metagrating, where all but one transmission/reflection channel is suppressed due to interference of radiated fields of the resonances. We design, fabricate and characterize such a metagrating on a silicon-on-insulator platform for mid-infrared wavelengths.