Compact multi-foci metalens spectrometer

Ruoxing Wang; Muhammad Afnan Ansari; Hammad Ahmed; Yan Li; Wenfeng Cai; Yanjun Liu; Songtao Li; Jianlong Liu; Li Li; Xianzhong Chen

doi:10.1038/s41377-023-01148-9

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Compact multi-foci metalens spectrometer

Original Articles

- Compact multi-foci metalens spectrometer
- Light: Science & Applications Vol. 12, Issue 5, Pages: 905-914(2023)
- Affiliations：
  
  1.Department of Mathematics and Physics, North China Electric Power University, 071003 Baoding, China
  2.Institute of Photonics and Quantum Sciences, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, UK
  3.School of Materials, Zhengzhou University of Aeronautics, 450015 Zhengzhou, China
  4.Department of Electrical and Electronic Engineering, Southern University of Science and Technology, 518055 Shenzhen, China
  5.College of Physics and Optoelectronic Engineering, Harbin Engineering University, 150001 Harbin, China
  6.School of Physics, Harbin Institute of Technology, 150001 Harbin, China
- Author bio：
  
  Xianzhong Chen (x.chen@hw.ac.uk)
- Funds：
- DOI：10.1038/s41377-023-01148-9
  CLC：
- Published：31 May 2023，
  
  Published Online：4 May 2023，
  
  Received：7 December 2022，
  
  Revised：22 March 2023，
  
  Accepted：3 April 2023
Scan for full text
Wang, R. X. et al. Compact multi-foci metalens spectrometer. Light: Science & Applications, 12, 905-914 (2023).
DOI：

Wang, R. X. et al. Compact multi-foci metalens spectrometer. Light: Science & Applications, 12, 905-914 (2023). DOI： 10.1038/s41377-023-01148-9.

摘要

Abstract

A lightweight and portable spectrometer is desirable for miniaturization and integration. The unprecedented capability of optical metasurfaces has shown much promise to perform such a task. We propose and experimentally demonstrate a compact high-resolution spectrometer with a multi-foci metalens. The novel metalens is designed based on wavelength and phase multiplexing

which can accurately map the wavelength information into its focal points located on the same plane. The measured wavelengths in the light spectra agree with simulation results upon the illumination of various incident light spectra. The uniqueness of this technique lies in the novel metalens that can simultaneously realize wavelength splitting and light focusing. The compactness and ultrathin nature of the metalens spectrometer render this technology have potential applications in on-chip integrated photonics where spectral analysis and information processing can be performed in a compact platform.

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references

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