Harmonic generation with multi-layer dielectric metasurfaces

Year: 2021

Authors: Marino G.; Rocco D.; Gigli C.; Beaudoin G.; Pantzas K.; Suffit S.; Filloux P.; Sagnes I.; Leo G.; De Angelis C.

Autors Affiliation: Univ Paris, Mat & Phenomenes Quant, 10 Rue Alice Domon & Leonie Duquet, F-75013 Paris, France; CNRS, 10 Rue Alice Domon & Leonie Duquet, F-75013 Paris, France; Univ Brescia, Dept Informat Engn, Via Branze 38, I-25123 Brescia, Italy; INO CNR, Via Branze 38, I-25123 Brescia, Italy; Univ Paris Sud Paris Saclay, Ctr Nanosci & Nanotechnol, CNRS, 1 Ave Augustin Fresn, F-91120 Palaiseau, France

Abstract: Metasurfaces have recently gained extensive interest because of their extraordinary optical behavior as artificial material interfaces with ultrahigh compactness. In this framework, dielectric platforms have newly become very promising for nonlinear nanophotonics, providing opportunities, especially for ultrafast optical switching, and high harmonic generation, opening the research field of nonlinear metaoptics. Up to now, nonlinear metaoptics have been mostly explored using single metasurfaces. However, in a long-term vision, the stacking of optical metasurfaces, very challenging in terms of fabrication, is one key goal of this research field. Here, we demonstrate a three-layer metasurface in the AlGaAs-on-insulator platform, which improves the second harmonic generation efficiency by more than one order of magnitude with respect to its one-layer counterpart. Our achievement paves the way toward phase-shaping multilayer and multifunctional all-dielectric metasurfaces.


Volume: 10 (7)      Pages from: 1837  to: 1843

More Information: G.L. acknowledges financial support by ANR through the NANOPAIR project (ANR-18-CE92-0043). C.D.A. and G.L. acknowledge the National Research Council Joint Laboratories program, project SAC.AD002.026 (OMEN). CDA acknowledges the Italian Ministry of University and Research (MIUR) through the PRIN project NOMEN (2017MP7F8F). I.S. acknowledges the french RENATECH network.
KeyWords: all-dielectric nanophotonics; Fourier imaging; Mie resonances; nanophotonics; nonlinear metasurfaces triplet; second-harmonic generation
DOI: 10.1515/nanoph-2021-0008

Citations: 16
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