Acta Optica Sinica, Volume. 41, Issue 22, 2224001(2021)

Dual-Peak Near-Perfect Absorption of Amorphous Silicon Nanocylinder Cluster Metasurface

Li Shao1、*, Jiangnan Si2, and Xiaoxu Deng2
Author Affiliations
  • 1AECC Xi’An Aero-Engine Ltd., Xi’an, Shaanxi 710021, China
  • 2School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
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    Figures & Tables(6)
    Amorphous silicon nano cylinder cluster metasurface. (a) Schematic of amorphous silicon nano cylinder cluster metasurface; (b) refractive index and extinction coefficient of amorphous silicon
    Scattering cross section of amorphous silicon nano cylinder cluster metasurface
    Effective polarizabilities of amorphous silicon nano cylinder cluster metasurface, where periods are Dx=Dy=400 nm. (a) Imaginary parts of effective polarizabilities; (b) real parts of effective polarizabilities
    Simulation spectra of amorphous silicon nano cylinder cluster metasurface
    Simulated displacement currents and electric field distributions in x-y plane and x-z plane at resonant wavelengths of amorphous silicon nano cylinder cluster metasurface [Figs. 5(a) and 5(b) are respectively captured at the dotted line positions in Figs. 5(c) and 5(d)]. (a) In x-y plane at 654 nm; (b) in x-y plane at 667 nm; (c) in x-z plane at 654 nm; (d) in x-z plane at 667 nm
    Optical spectra of amorphous silicon nano cylinder cluster metasurface with varied incident angle, where Dx=400 nm, Dy=400 nm, r1=80 nm, r2=63 nm, d1=90 nm, and d2=80 nm. (a) Transmission spectrum; (b) reflection spectrum; (c) absorption spectrum
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    Li Shao, Jiangnan Si, Xiaoxu Deng. Dual-Peak Near-Perfect Absorption of Amorphous Silicon Nanocylinder Cluster Metasurface[J]. Acta Optica Sinica, 2021, 41(22): 2224001

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    Paper Information

    Category: Optics at Surfaces

    Received: Apr. 14, 2021

    Accepted: Jun. 1, 2021

    Published Online: Nov. 23, 2021

    The Author Email: Li Shao (2304694600@qq.com)

    DOI:10.3788/AOS202141.2224001

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