Fast modulation and polarization control of infrared emission by incandescent metasurfaces

Anne Nguyen; Léo Wojszvzyk; Anne-Lise Coutrot; Benjamin Vest; Jean-Jacques Greffet

doi:10.1117/12.2594428

1 August 2021 Fast modulation and polarization control of infrared emission by incandescent metasurfaces

Anne Nguyen, Léo Wojszvzyk, Anne-Lise Coutrot, Benjamin Vest, Jean-Jacques Greffet

Proceedings Volume 11797, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XIX; 117971T (2021) https://doi.org/10.1117/12.2594428
Event: SPIE Nanoscience + Engineering, 2021, San Diego, California, United States

Abstract

Currently, there are no cheap and compact sources in the mid-infrared range that can be modulated at high frequencies. Incandescent sources such as hot membranes and globars are widely used for mid-infrared spectroscopic applications, but for detection or communication applications where fast temperature modulation are desirable, thermal inertia quickly becomes a limiting factor. Besides, such incandescent sources are typically unpolarized, isotropic, broadband and have a low efficiency. However, these properties are not imposed by fundamental limitations stemming from physics laws, except for the low brightness dictated by Bose-Einstein distribution. Here, we introduce a metasurface that combines nanoscale heaters to ensure fast thermal response and nanophotonic resonances to provide large spectrally selective and polarized emissivity. We report a peak emissivity of 0.8 and an operation up to 20 MHz, six orders of magnitude faster than commercially available hot membranes.

Conference Presentation

Citation Download Citation

Anne Nguyen, Léo Wojszvzyk, Anne-Lise Coutrot, Benjamin Vest, and Jean-Jacques Greffet "Fast modulation and polarization control of infrared emission by incandescent metasurfaces", Proc. SPIE 11797, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XIX, 117971T (1 August 2021); https://doi.org/10.1117/12.2594428

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