All-on-chip reconfigurable generation of scalar and vectorial orbital angular momentum beams

Weike Zhao; Xiaolin Yi; Jieshan Huang; Ruoran Liu; Jianwei Wang; Yaocheng Shi; Yungui Ma; Andrew Forbes; Daoxin Dai

doi:10.1038/s41377-025-01899-7

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All-on-chip reconfigurable generation of scalar and vectorial orbital angular momentum beams

Original Articles

- All-on-chip reconfigurable generation of scalar and vectorial orbital angular momentum beams
- Light: Science & Applications Vol. 14, Issue 8, Pages: 2335-2349(2025)
- Affiliations：
  
  1.State Key Laboratory for Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310058, China
  2.State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
  3.School of Physics, University of the Witwatersrand, Johannesburg, South Africa
- Author bio：
  
  Andrew Forbes (Andrew.Forbes@wits.ac.za)
  Daoxin Dai (dxdai@zju.edu.cn)
- Funds：
- DOI：10.1038/s41377-025-01899-7
  CLC：
- Received：04 November 2024，
  
  Revised：02 April 2025，
  
  Accepted：21 May 2025，
  
  Published Online：30 June 2025，
  
  Published：31 August 2025
- Accepted：
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Zhao, W. K. et al. All-on-chip reconfigurable generation of scalar and vectorial orbital angular momentum beams. Light: Science & Applications, 14, 2335-2349 (2025).
DOI：

Zhao, W. K. et al. All-on-chip reconfigurable generation of scalar and vectorial orbital angular momentum beams. Light: Science & Applications, 14, 2335-2349 (2025). DOI： 10.1038/s41377-025-01899-7.

摘要

Abstract

Structured light carrying angular momentum

such as spin angular momentum (SAM) and orbital angular momentum (OAM)

has been at the core of new science and applications

driving the need for compact on-chip sources. While many static on-chip solutions have been demonstrated

as well as on-chip sources of free-space modes

no architecture that is fully reconfigurable in all angular momentum states and all on-chip has so far been possible. Here we report the first all-on-chip structured light generator for the creation of both scalar and vectorial angular momentum beams

facilitated through a silicon-on-insulator (SOI) chip with a silica mode multiplexer (silica chip). We selectively stimulate six linearly-polarized (LP) modes of the silica multimode bus waveguide

precisely controlling the modal powers and phases with the SOI chip. This allows us to tailor arbitrary superpositions of the mode set thus synthesizing common cylindrical vector vortex beams as well as OAM beams of controlled spin and topological charge. Our compact structured light generator exhibits high switching speed and operates across the telecom band

paving the way for applications such as optical communication and integrated quantum technologies.

关键词

Keywords

references

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