A broadband achromatic metalens array for integral imaging in the visible

Zhi-Bin Fan; Hao-Yang Qiu; Han-Le Zhang; Xiao-Ning Pang; Li-Dan Zhou; Lin Liu; Hui Ren; Qiong-Hua Wang; Jian-Wen Dong

doi:10.1038/s41377-019-0178-2

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A broadband achromatic metalens array for integral imaging in the visible

Article

- A broadband achromatic metalens array for integral imaging in the visible
- Light: Science & Applications Vol. 8, Issue 4, Pages: 600-609(2019)
- Affiliations：
  
  1.State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou 510275, China
  2.School of Physics, Sun Yat-sen University, Guangzhou 510275, China
  3.School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, China
- Author bio：
  
  Qiong-Hua Wang (qionghua@buaa.edu.cn)
  Jian-Wen Dong (dongjwen@mail.sysu.edu.cn)
- Funds：
- DOI：10.1038/s41377-019-0178-2
  CLC：
- Published：2019，
  
  Published Online：24 July 2019，
  
  Received：27 January 2019，
  
  Revised：03 July 2019，
  
  Accepted：06 July 2019
- Accepted：
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Fan, Z. B. et al. A broadband achromatic metalens array for integral imaging in the visible. Light: Science & Applications, 8, 600-609 (2019).
DOI：

Fan, Z. B. et al. A broadband achromatic metalens array for integral imaging in the visible. Light: Science & Applications, 8, 600-609 (2019). DOI： 10.1038/s41377-019-0178-2.

摘要

Abstract

Integral imaging is a promising three-dimensional (3D) imaging technique that captures and reconstructs light field information. Microlens arrays are usually used for the reconstruction process to display 3D scenes to the viewer. However

the inherent chromatic aberration of the microlens array reduces the viewing quality

and thus

broadband achromatic imaging remains a challenge for integral imaging. Here

we realize a silicon nitride metalens array in the visible region that can be used to reconstruct 3D optical scenes in the achromatic integral imaging for white light. The metalens array contains 60 × 60 polarization-insensitive metalenses with nearly diffraction-limited focusing. The nanoposts in each high-efficiency (measured as 47% on average) metalens are delicately designed with zero effective material dispersion and an effective achromatic refractive index distribution from 430 to 780 nm. In addition

such an achromatic metalens array is composed of only a single silicon nitride layer with an ultrathin thickness of 400 nm

making the array suitable for on-chip hybrid-CMOS integration and the parallel manipulation of optoelectronic information. We expect these findings to provide possibilities for full-color and aberration-free integral imaging

and we envision that the proposed approach may be potentially applicable in the fields of high-power microlithography

high-precision wavefront sensors

virtual/augmented reality and 3D imaging.

关键词

Keywords

references

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