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

Articles

- Suppressing meta-holographic artifacts by laser coherence tuning
- Light: Science & Applications Vol. 10, Issue 7, Pages: 1236-1246(2021)
- 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
  CLC：
- Published：31 July 2021，
  
  Published Online：19 May 2021，
  
  Received：16 December 2020，
  
  Revised：14 April 2021，
  
  Accepted：26 April 2021
- Accepted：
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Eliezer, Y. et al. Suppressing meta-holographic artifacts by laser coherence tuning. Light: Science & Applications, 10, 1236-1246 (2021).
DOI：

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.

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Keywords

references

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