Metallo-dielectric metasurfaces for thermal emission with controlled spectral bandwidth and angular aperture
Cédric Blanchard, Léo Wojszvzyk, Cécile Jamois, Jean-Louis Leclercq, Céline Chevalier, Lydie Ferrier, P. Viktorovitch, Ioana Moldovan-Doyen, François Marquier, Jean‐Jacques Greffet, Xavier Letartre
Abstract
We introduce thermal metallo-dielectric metasurfaces as mid IR sources. The emitter is a lossy metal. The spectral and angular emission is controlled using a periodic array of high refractive dielectric resonators. We introduce a design that allows to control independently the emission bandwidth and the angular aperture while ensuring a large emissivity. To validate the concept, we fabricated and characterized a metasurface, showing a good agreement with the theory.
Topics & Concepts
EmissivityMaterials scienceDielectricOpticsBandwidth (computing)OptoelectronicsAperture (computer memory)ResonatorMetamaterialPhysicsTelecommunicationsAcousticsComputer scienceThermal Radiation and Cooling TechnologiesMetamaterials and Metasurfaces ApplicationsAdvanced Antenna and Metasurface Technologies