Metallo-dielectric metasurfaces for thermal emission with controlled spectral bandwidth and angular aperture

C. Blanchard (1, 2) , L. Wojszvzyk (3) , Cecile Jamois (1) , Jean -Louis Leclercq (1) , Céline Chevalier (1) , Lydie Ferrier (1) , P. Viktorovitch (1) , I. Moldovan-Doyen (3) , François Marquier (4, 3) , Jean-Jacques Greffet (3) , Xavier Letartre (1)

1 INL - I-Lum - INL - Ingénierie et conversion de lumière (i-Lum)
2 CEMHTI - Conditions Extrêmes et Matériaux : Haute Température et Irradiation
3 Laboratoire Charles Fabry / Nanophotonique
4 LuMIn - Laboratoire Lumière, Matière et Interfaces

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.

Mots clés: Bandwidth; Angular apertures; Angular emission; IR source; Metallodielectric; Metasurface; Periodic arrays; Spectral bandwidth; Spectral emission; Thermal; Thermal emissions; Dielectric devices

Domaines: Matériaux; Optique / photonique

C. Blanchard, L. Wojszvzyk, Cecile Jamois, Jean -Louis Leclercq, Céline Chevalier, et al.. Metallo-dielectric metasurfaces for thermal emission with controlled spectral bandwidth and angular aperture. Optical Materials Express, 2022, 12 (1), pp.1-12. ⟨10.1364/OME.443111⟩. ⟨hal-03622069⟩