Design of achromatic metalens based on dielectric metasurface

Wenqing Zhu; Liangping Xia; Yang Zheng; Zengbao Yang; Suihu Dang; Man Zhang; Lin Qin; Chunlei Du

doi:10.1117/12.3032192

10 October 2024 Design of achromatic metalens based on dielectric metasurface

Wenqing Zhu, Liangping Xia, Yang Zheng, Zengbao Yang, Suihu Dang, Man Zhang, Lin Qin, Chunlei Du

Proceedings Volume 13278, Seventh Global Intelligent Industry Conference (GIIC 2024); 132780D (2024) https://doi.org/10.1117/12.3032192
Event: Seventh Global Intelligent Industry Conference (GIIC 2024), 2024, Shenzhen, China

Abstract

Metalenses based on all-dielectric metasurfaces plays an important role in microscopic imaging, machine vision and holographic imaging. Chromatic aberration correction is an important factor that imaging devices. In this work, we propose an transmission achromatic metalens that can operate over a broad band of wavelengths. Based on the principle of phase compensation, the finite-difference time-domain method is used to calculate the wavefront of light for the design of the nano-units in the metalens with eliminating chromatic aberration. In the whole incident spectrum of visible light from 425 nm to 625 nm, The maximum focal shift of the achromatic metalens is about 7.9 %.And the average efficiency of the metalens with a numerical aperture of 0.6 is about 42 % in the wavelength band.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Wenqing Zhu, Liangping Xia, Yang Zheng, Zengbao Yang, Suihu Dang, Man Zhang, Lin Qin, and Chunlei Du "Design of achromatic metalens based on dielectric metasurface", Proc. SPIE 13278, Seventh Global Intelligent Industry Conference (GIIC 2024), 132780D (10 October 2024); https://doi.org/10.1117/12.3032192

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KEYWORDS

Design

Phase shift keying

Dielectrics

Chromatic aberrations

Phase modulation

Visible radiation

Imaging systems

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