Diffraction-limited imaging with monolayer 2D material-based ultrathin flat lenses

Han Lin; Zai-Quan Xu; Guiyuan Cao; Yupeng Zhang; Jiadong Zhou; Ziyu Wang; Zhichen Wan; Zheng Liu; Kian Ping Loh; Cheng-Wei Qiu; Qiaoliang Bao; Baohua Jia

doi:10.1038/s41377-020-00374-9

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Diffraction-limited imaging with monolayer 2D material-based ultrathin flat lenses

Original Articles

- Diffraction-limited imaging with monolayer 2D material-based ultrathin flat lenses
- Diffraction-limited imaging with monolayer 2D material-based ultrathin flat lenses
- LSA 2020年9卷第5期页码：1359-1369
- Affiliations：
  
  1.Centre for Translational Atomaterials, Faculty of Science, Engineering and Technology, Swinburne University of Technology, P. O. Box 218, Hawthorn, VIC 3122, Australia
  2.Department of Materials Science and Engineering, ARC Centre of Excellence in Future Low-Energy Electronics Technologies (FLEET), Monash University, Wellington Road, Clayton, VIC 3800, Australia
  3.School of Mathematical and Physical Sciences, Faculty of Science, University of Technology Sydney, 15 Broadway, Ultimo, NSW 2007, Australia
  4.Institute of Microscale Optoelectronics, Lab of Artificial Microstructure for Optoelectronics, Shenzhen University, 518000 Shenzhen, China
  5.School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
  6.Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
  7.Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583, Singapore
  8.The Australian Research Council (ARC) Industrial Transformation Training Centre in Surface Engineering for Advanced Materials (SEAM), Swinburne University of Technology, P. O. Box 218, Hawthorn, VIC 3122, Australia
- Author bio：
  
  Cheng-Wei Qiu (chengwei.qiu@nus.edu.sg)
  Qiaoliang Bao (qiaoliang.bao@gmail.com)
  Baohua Jia (bjia@swin.edu.au)
- Funds：
- DOI：10.1038/s41377-020-00374-9
  中图分类号：
- 纸质出版日期：2020，
  
  网络出版日期：2020-08-11，
  
  收稿日期：2020-04-24，
  
  修回日期：2020-07-02，
  
  录用日期：2020-07-23
- Accepted：
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Diffraction-limited imaging with monolayer 2D material-based ultrathin flat lenses[J]. LSA, 2020,9(5):1359-1369.

Lin, H. et al. Diffraction-limited imaging with monolayer 2D material-based ultrathin flat lenses. Light: Science & Applications, 9, 1359-1369 (2020).
Diffraction-limited imaging with monolayer 2D material-based ultrathin flat lenses[J]. LSA, 2020,9(5):1359-1369. DOI： 10.1038/s41377-020-00374-9.

Lin, H. et al. Diffraction-limited imaging with monolayer 2D material-based ultrathin flat lenses. Light: Science & Applications, 9, 1359-1369 (2020). DOI： 10.1038/s41377-020-00374-9.

摘要

Abstract

Ultrathin flat optics allow control of light at the subwavelength scale that is unmatched by traditional refractive optics. To approach the atomically thin limit

the use of 2D materials is an attractive possibility due to their high refractive indices. However

achievement of diffraction-limited focusing and imaging is challenged by their thickness-limited spatial resolution and focusing efficiency. Here we report a universal method to transform 2D monolayers into ultrathin flat lenses. Femtosecond laser direct writing was applied to generate local scattering media inside a monolayer

which overcomes the longstanding challenge of obtaining sufficient phase or amplitude modulation in atomically thin 2D materials. We achieved highly efficient 3D focusing with subwavelength resolution and diffraction-limited imaging. The high focusing performance even allows diffraction-limited imaging at different focal positions with varying magnifications. Our work paves the way for downscaling of optical devices using 2D materials and reports an unprecedented approach for fabricating ultrathin imaging devices.

关键词

Keywords

references

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