Conditions Extrêmes et Matériaux : Haute Température et Irradiation
CEMHTI - UPR3079 CNRS

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2022

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Cedric Blanchard, Leo Wojszvzyk, Cecile Jamois, Jean-Louis Leclercq, Celine Chevalier, Lydie Ferrier, Pierre Viktorovitch, Ioana Moldovan-Doyen, François Marquier, Jean-Jacques Greffet, Xavier Letartre, 'Metallo-dielectric metasurfaces for thermal emission with controlled spectral bandwidth and angular aperture', Opt. Mat. Express 12 1-12 (2022) doi:10.1364/ome.443111

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.