Harmonic generation with multi-layer dielectric metasurfaces

Nanophotonics

article

Giuseppe Marino¹  Pascal Filloux¹  Isabelle Sagnes²  Giuseppe Leo¹  Costantino De Angelis³  Davide Rocco³  Carlo Gigli¹  Grégoire Beaudoin²  Konstantinos Pantzas²  Stéphan Suffit¹ 

[1] Université de Paris & CNRS;Centre de Nanosciences et de Nanotechnologies, CNRS – Université Paris-Sud-Paris-Saclay;Department of Information Engineering, Università degli Studi di Brescia and INO-CNR

关键词: all-dielectric nanophotonics;    Fourier imaging;    Mie resonances;    nanophotonics;    nonlinear metasurfaces triplet;    second-harmonic generation;   

DOI  :  10.1515/nanoph-2021-0008

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

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.

【 授权许可】

CC BY