Off-axis multi-wavelength dispersion controlling metalens for multi-color imaging

Kaihua Dou; Xin Xie; Mingbo Pu; Xiong Li; Xiaoliang Ma; Changtao Wang; Xiangang Luo

doi:10.29026/oea.2020.190005

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Dou K H, Xie X, Pu M B, Li X, Ma X L et al. Off-axis multi-wavelength dispersion controlling metalens for multi-color imaging. Opto-Electron Adv 3, 190005 (2020). doi: 10.29026/oea.2020.190005

Citation:

Dou K H, Xie X, Pu M B, Li X, Ma X L et al. Off-axis multi-wavelength dispersion controlling metalens for multi-color imaging. Opto-Electron Adv 3, 190005 (2020). doi: 10.29026/oea.2020.190005

Original Article Open Access

Off-axis multi-wavelength dispersion controlling metalens for multi-color imaging

1.
State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering, Institute of Optics and Electronics, Chinese Academyof Sciences, Chengdu 610209, China
2.
School of Optoelectronics, University of Chinese Academy of Sciences, Beijing 100049, China

More Information

^†These authors contributed equally to this work.
Corresponding author: X G Luo, E-mail: lxg@ioe.ac.cn

Received Date 05 March 2019

Accepted Date 07 April 2019

Available Online 20 April 2020

Published Date 21 April 2020

Abstract

Abstract

Dispersion control is crucial in optical systems, and chromatic aberration is an important factor affecting imaging quality in imaging systems. Due to the inherent property of materials, dispersion engineering is complex and needs to trade off other aberration in traditional ways. Although metasurface offers an effective method to overcome these limits and results in well-engineered dispersion, off-axis dispersion control is still a challenging topic. In this paper, we design a single-layer metalens which is capable of focusing at three wavelengths (473 nm, 532 nm, and 632 nm) with different incident angles (0°, -17° and 17°) into the same point. We also demonstrate that this metalens can provide an alternative for the bulky color synthetic prism in a 3-chips digital micromirror device (DMD) laser projection system. Through this approach, various off-axis dispersion controlling optical devices could be realized.
- off-axis /
- dispersion control /
- metalens /
- color imaging

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References

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