Acta Optica Sinica, Volume. 42, Issue 15, 1524001(2022)

Influence of Lattice Perturbation on Fano Resonance Properties of Nanohole Metasurface

Ying Chen*, Meijie Li, Jiankun Wang, and Meng Zhao
Author Affiliations
  • Hebei Province Key Laboratory of Test/Measurement Technology and Instrument, School of Electrical Engineering, Yanshan University, Qinhuangdao 066004, Hebei , China
  • show less

    Resonant metasurfaces with a high Q factor have received widespread attention in nanophotonics due to their significant enhancement effect in local electromagnetic fields. On the basis of the unique electromagnetic properties of all-dielectric materials, an all-dielectric nanohole array metasurface with a symmetry-broken square lattice is proposed in this paper. The in-plane symmetry of the square lattice unit cell is broken to excite multiple Fano resonances with a high Q factor in the near-infrared region. Under the excitation of plane waves at a normal incidence, the proposed metasurface can realize the double degenerate Fano resonance independent of polarization and the triple nondegenerate Fano resonance dependent on polarization, and the latter has a higher Q factor and stronger electromagnetic locality. The numerical simulation is performed to investigate the influence of lattice-perturbed parameters on the properties of the triple nondegenerate Fano resonance. The results reveal that the Q factor and the local electric field intensity of the triple nondegenerate Fano resonance are controlled by lattice-perturbed parameters. Through the optimization of lattice-perturbed parameters, the Q factor of the triple nondegenerate Fano resonance can be simultaneously up to 1.8×104, 2.7×104, and 1.9×104, and their local electric field intensity can be simultaneously up to 2×104, 3×104, and 1.5×104.

    Tools

    Get Citation

    Copy Citation Text

    Ying Chen, Meijie Li, Jiankun Wang, Meng Zhao. Influence of Lattice Perturbation on Fano Resonance Properties of Nanohole Metasurface[J]. Acta Optica Sinica, 2022, 42(15): 1524001

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Save article for my favorites
    Paper Information

    Category: Optics at Surfaces

    Received: Dec. 31, 2021

    Accepted: Mar. 8, 2022

    Published Online: Aug. 4, 2022

    The Author Email: Chen Ying (zhu7880@ysu.edu.cn)

    DOI:10.3788/AOS202242.1524001

    Topics