Controlling angular dispersions in optical metasurfaces

Xiyue Zhang; Qi Li; Feifei Liu; Meng Qiu; Shulin Sun; Qiong He; Lei Zhou

doi:10.1038/s41377-020-0313-0

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Controlling angular dispersions in optical metasurfaces

Original Articles

- Controlling angular dispersions in optical metasurfaces
- Light: Science & Applications Vol. 9, Issue 3, Pages: 739-750(2020)
- Affiliations：
  
  1.State Key Laboratory of Surface Physics, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), and Department of Physics, Fudan University, Shanghai 200438, China
  2.Shanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, Green Photonics and Department of Optical Science and Engineering, Fudan University, Shanghai 200433, China
  3.Academy for Engineering and Technology, Fudan University, Shanghai 200433, China
  4.Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China
- Author bio：
  
  Qiong He (qionghe@fudan.edu.cn)
  Lei Zhou (phzhou@fudan.edu.cn)
- Funds：
- DOI：10.1038/s41377-020-0313-0
  CLC：
- Published：2020，
  
  Published Online：06 May 2020，
  
  Received：17 December 2019，
  
  Revised：26 March 2020，
  
  Accepted：30 March 2020
- Accepted：
Scan QR Code
Zhang, X. Y. et al. Controlling angular dispersions in optical metasurfaces. Light: Science & Applications, 9, 739-750 (2020).
DOI：

Zhang, X. Y. et al. Controlling angular dispersions in optical metasurfaces. Light: Science & Applications, 9, 739-750 (2020). DOI： 10.1038/s41377-020-0313-0.

摘要

Abstract

Although metasurfaces have shown great potential for manipulating li

ght

most previously realized meta-devices suffer from

uncontrolled

angular dispersions

making them unfavorable for many applications. Here

we propose a general strategy to realize optical metasurfaces with desired angular dispersions based on carefully controlling both the near-field couplings between meta-atoms and the radiation pattern of a single meta-atom. Utilizing such a strategy

we experimentally demonstrate a series of optical meta-devices with predesigned angular dispersions

including two incident-angle-

insensitive

absorbers

one incident-angle-

selective

absorber

and one multifunctional meta-polarizer whose functionality changes from a perfect mirror to a half-waveplate as the excitation angle varies. Finally

we design a

gradient

meta-device using meta-atom arrays with purposely controlled angular dispersions and numerically demonstrate that it can exhibit distinct wavefront-control functionalities when illuminated at different incident angles. Our findings establish a new platform for achieving angle-multiplexed functional meta-devices

significantly expanding the wave-manipulation capabilities of optical metasurfaces.

关键词

Keywords

references

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