Suppressing meta-holographic artifacts by laser coherence tuning

Yaniv Eliezer; Geyang Qu; Wenhong Yang; Yujie Wang; Hasan Yılmaz; Shumin Xiao; Qinghai Song; Hui Cao

doi:10.1038/s41377-021-00547-0

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Suppressing meta-holographic artifacts by laser coherence tuning

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- Suppressing meta-holographic artifacts by laser coherence tuning
- Suppressing meta-holographic artifacts by laser coherence tuning
- LSA 2021年10卷第7期页码：1236-1246
- Affiliations：
  
  1.Department of Applied Physics, Yale University, New Haven, CT 06520, USA
  2.Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, P. R. China
- Author bio：
  
  Shumin Xiao (shumin.xiao@hit.edu.cn)
  Qinghai Song (qinghai.song@hit.edu.cn)
  Hui Cao (hui.cao@yale.edu)
- Funds：
- DOI：10.1038/s41377-021-00547-0
  中图分类号：
- 纸质出版日期：2021-07-31，
  
  网络出版日期：2021-05-19，
  
  收稿日期：2020-12-16，
  
  修回日期：2021-04-14，
  
  录用日期：2021-04-26
- Accepted：
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Suppressing meta-holographic artifacts by laser coherence tuning[J]. LSA, 2021,10(7):1236-1246.

Eliezer, Y. et al. Suppressing meta-holographic artifacts by laser coherence tuning. Light: Science & Applications, 10, 1236-1246 (2021).
Suppressing meta-holographic artifacts by laser coherence tuning[J]. LSA, 2021,10(7):1236-1246. DOI： 10.1038/s41377-021-00547-0.

Eliezer, Y. et al. Suppressing meta-holographic artifacts by laser coherence tuning. Light: Science & Applications, 10, 1236-1246 (2021). DOI： 10.1038/s41377-021-00547-0.

摘要

Abstract

A metasurface hologram combines fine spatial resolution and large viewing angles with a planar form factor and compact size. However

it suffers coherent artifacts originating from electromagnetic cross-talk between closely packed meta-atoms and fabrication defects of nanoscale features. Here

we introduce an efficient method to suppress all artifacts by fine-tuning the spatial coherence of illumination. Our method is implemented with a degenerate cavity laser

which allows a precise and continuous tuning of the spatial coherence over a wide range

with little variation in the emission spectrum and total power. We find the optimal degree of spatial coherence to suppress the coherent artifacts of a meta-hologram while maintaining the image sharpness. This work paves the way to compact and dynamical holographic displays free of coherent defects.

关键词

Keywords

references

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