Transmissive mid-infrared achromatic bifocal metalens with polarization sensitivity | Zendy

Xueshen Li | Zendy; Shouqian Chen | Zendy; Di Wang | Zendy; Xiaotian Shi | Zendy; Zhigang Fan | Zendy

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Transmissive mid-infrared achromatic bifocal metalens with polarization sensitivity

Author(s) -

Xueshen Li,

Shouqian Chen,

Di Wang,

Xiaotian Shi,

Zhigang Fan

Publication year - 2021

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.424887

Subject(s) - achromatic lens , optics , holography , polarization (electrochemistry) , infrared , chromatic aberration , chromatic scale , materials science , diffraction efficiency , physics , optoelectronics , chemistry

Metasurfaces have shown great potential in versatile areas such as vortex-beam generators, metalenses, holograms and so on. However, chromatic error hinders metasurfaces, especially metalenses, from wider applications. In this paper, we demonstrate a novel design for a transmissive mid-infrared achromatic bifocal metalens with polarization sensitivity. The compensation phase is used to eliminate the chromatic aberration. Simulation results show that, over a continuous waveband from 3.9 to 4.6µm, the focal length only changes by 2.26% with an average focusing efficiency of about 18%. This work can push the practical application of mid-infrared metasurfaces.

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