Spectral tomographic imaging with aplanatic metalens

Chen Chen; Wange Song; Jia-Wern Chen; Jung-Hsi Wang; Yu Han Chen; Beibei Xu; Mu-Ku Chen; Hanmeng Li; Bin Fang; Ji Chen; Hsin Yu Kuo; Shuming Wang; Din Ping Tsai; Shining Zhu; Tao Li

doi:10.1038/s41377-019-0208-0

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Spectral tomographic imaging with aplanatic metalens

Article

- Spectral tomographic imaging with aplanatic metalens
- Light: Science & Applications Vol. 8, Issue 6, Pages: 990-997(2019)
- Affiliations：
  
  1.National Laboratory of Solid State Microstructures, Key Laboratory of Intelligent Optical Sensing and Integration, Jiangsu Key Laboratory of Artificial Functional Materials, College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China
  2.Collaborative Innovation Center of Advanced Microstructures, Nanjing, China
  3.Research Center for Applied Sciences, Taipei, 11529 Taiwan, China
  4.Department of Physics, Taiwan University, Taipei, 10617 Taiwan, China
  5.Graduate Institute of Electronics Engineering, Taiwan University, Taipei, 10617 Taiwan, China
- Author bio：
  
  Tao Li (taoli@nju.edu.cn)
- Funds：
- DOI：10.1038/s41377-019-0208-0
  CLC：
- Published：2019，
  
  Published Online：06 November 2019，
  
  Received：16 May 2019，
  
  Revised：30 September 2019，
  
  Accepted：03 October 2019
- Accepted：
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Chen, C. et al. Spectral tomographic imaging with aplanatic metalens. Light: Science & Applications, 8, 990-997 (2019).
DOI：

Chen, C. et al. Spectral tomographic imaging with aplanatic metalens. Light: Science & Applications, 8, 990-997 (2019). DOI： 10.1038/s41377-019-0208-0.

摘要

Abstract

Tomography is an informative imaging modality that is usually implemented by mechanical scanning

owing to the limited depth-of-field (DOF) in conventional systems. However

recent imaging systems are working towards more compact and stable architectures; therefore

developing nonmotion tomography is highly desirable. Here

we propose a metalens-based spectral imaging system with an aplanatic GaN metalens (NA = 0.78)

in which large chromatic dispersion is used to access spectral focus tuning and optical zooming in the visible spectrum. After the function of wavelength-switched tomography was confirmed on cascaded samples

this aplanatic metalens is utilized to image microscopic frog egg cells and shows excellent tomographic images with distinct DOF features of the cell membrane and nucleus. Our approach makes good use of the large diffractive dispersion of the metalens and develops a new imaging technique that advances recent informative optical devices.

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Keywords

references

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