Circularly polarized light emission by incandescent metasurfaces

Anne Nguyen; Jean-Paul Hugonin; Enrique Garcia-Caurel; Anne-Lise Coutrot; Benjamin Vest; Jean-Jacques Greffet

doi:10.1117/12.2632983

3 October 2022 Circularly polarized light emission by incandescent metasurfaces

Anne Nguyen, Jean-Paul Hugonin, Enrique Garcia-Caurel, Anne-Lise Coutrot, Benjamin Vest, Jean-Jacques Greffet

Proceedings Volume PC12197, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XX; PC121970I (2022) https://doi.org/10.1117/12.2632983
Event: SPIE Nanoscience + Engineering, 2022, San Diego, California, United States

Abstract

Blackbody radiation is intrinsically isotropic, broadband and unpolarized. However, these properties can be strongly modified using appropriate nanostructures. Here we report about the design, fabrication and characterization of an incandescent metasurface, emitting circularly polarized light in the MWIR domain, around 4.7 microns. Our device consists of a three-layer structure, where the top surface is paved with a subwavelength metallic grating following a chiral pattern. The system geometry is engineered to optimize the circular dichroism in absorption. When heated by Joule effect, the grating acts as a thermal emitter providing circularly polarized light with a polarization degree around 35%.

Conference Presentation

Citation Download Citation

Anne Nguyen, Jean-Paul Hugonin, Enrique Garcia-Caurel, Anne-Lise Coutrot, Benjamin Vest, and Jean-Jacques Greffet "Circularly polarized light emission by incandescent metasurfaces", Proc. SPIE PC12197, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XX, PC121970I (3 October 2022); https://doi.org/10.1117/12.2632983

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