High-performance achromatic flat lens by multiplexing meta-atoms on a stepwise phase dispersion compensation layer

Jingen Lin; Jinbei Chen; Jianchao Zhang; Haowen Liang; Juntao Li; Xue-Hua Wang

doi:10.1038/s41377-024-01731-8

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High-performance achromatic flat lens by multiplexing meta-atoms on a stepwise phase dispersion compensation layer

Original Articles

- High-performance achromatic flat lens by multiplexing meta-atoms on a stepwise phase dispersion compensation layer
- Light: Science & Applications Vol. 14, Issue 6, Pages: 1522-1531(2025)
- Affiliations：
  
  1.State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics, Sun Yat-Sen University, Guangzhou, China
  2.Hisense Laser Display Co.,Ltd, 399 Songling Road, Qingdao, Shandong, China
  3.Quantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area (Guangdong), Shenzhen, China
- Author bio：
  
  Haowen Liang (lianghw26@mail.sysu.edu.cn)
  Juntao Li (lijt3@mail.sysu.edu.cn)
  Xue-Hua Wang (wangxueh@mail.sysu.edu.cn)
- Funds：
- DOI：10.1038/s41377-024-01731-8
  CLC：
- Received：16 August 2024，
  
  Revised：20 November 2024，
  
  Accepted：23 December 2024，
  
  Published Online：05 March 2025，
  
  Published：30 June 2025
- Accepted：
Scan QR Code
Lin, J. E. et al. High-performance achromatic flat lens by multiplexing meta-atoms on a stepwise phase dispersion compensation layer. Light: Science & Applications, 14, 1522-1531 (2025).
DOI：

Lin, J. E. et al. High-performance achromatic flat lens by multiplexing meta-atoms on a stepwise phase dispersion compensation layer. Light: Science & Applications, 14, 1522-1531 (2025). DOI： 10.1038/s41377-024-01731-8.

摘要

Abstract

Flat optics have attracted interest for decades due to their flexibility in manipulating optical wave properties

which allows the miniaturization of bulky optical assemblies into integrated planar components. Recent advances in achromatic flat lenses have shown promising applications in various fields. However

it is a significant challenge for achromatic flat lenses with a high numerical aperture to simultaneously achieve broad bandwidth and expand the aperture sizes. Here

we present the zone division multiplex of the meta-atoms on a stepwise phase dispersion compensation (SPDC) layer to address the above challenge. In principle

the aperture size can be freely enlarged by increasing the optical thickness difference between the central and marginal zones of the SPDC layer

without the limit of the achromatic bandwidth. The SPDC layer also serves as the substrate

making the device thinner. Two achromatic flat lenses of 500 nm thickness with a bandwidth of 650–1000 nm are experimentally achieved: one with a numerical aperture of 0.9 and a radius of 20.1 µm

and another with a numerical aperture of 0.7 and a radius of 30.0 µm. To the best of our knowledge

they are the broadband achromatic flat lenses with highest numerical apertures

the largest aperture sizes and thinnest thickness reported so far. Microscopic imaging with a 1.10 µm resolution has also been demonstrated by white light illumination

surpassing any previously reported resolution attained by achromatic metalenses and multi-level diffractive lenses. These unprecedented performances mark a substantial step toward practical applications of flat lenses.

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references

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