Tunable structured laser over full spatial spectrum

Quan Sheng; Jing-Ni Geng; Jia-Qi Jiang; Tian-Chang Liu; David James Spence; Helen Margaret Pask; Allam Srinivasa Rao; Takashige Omatsu; Shi-Jie Fu; Zhen-Xu Bai; Zhi-Wei Lv; Wei Shi; Jian-Quan Yao; Carmelo Rosales-Guzmán; Zhi-Han Zhu

doi:10.1038/s41377-026-02243-3

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Tunable structured laser over full spatial spectrum

Original Articles

- Tunable structured laser over full spatial spectrum
- Light: Science & Applications Vol. 15, Issue 6, Pages: 1926-1935(2026)
- Affiliations：
  
  1.State Key Laboratory of Precision Measuring Technology and Instruments, School of Precision Instrument of Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China
  2.Institute of Quantum Science and Technology, and Department of Physics, Yanbian University, Yanji 133002 Jilin, China
  3.Wang Da-Heng Center, Heilongjiang Key Laboratory of Quantum Control, Harbin University of Science and Technology, Harbin 150080, China
  4.MQ Photonics Research Centre, School of Mathematical and Physical Sciences, Macquarie University, Sydney, NSW 2109, Australia
  5.Molecular Chirality Research Center, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
  6.Center for Advanced Laser Technology, Hebei University of Technology, Tianjin 300401, China
  7.Centro de Investigaciones en Óptica, A.C., Loma del Bosque 115, Colonia Lomas del Campestre, 37150 León, GTO, Mexico
- Author bio：
  
  Wei Shi (shiwei@tju.edu.cn)
  Zhi-Han Zhu (zhuzhihan@ybu.edu.cn)
- Funds：
- DOI：10.1038/s41377-026-02243-3
  CLC：
- Received：14 August 2025，
  
  Revised：2026-01-22，
  
  Accepted：11 February 2026，
  
  Online First：13 March 2026，
  
  Published：30 June 2026
- Accepted：
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Sheng, Q. et al. Tunable structured laser over full spatial spectrum. Light: Science & Applications, 15, 1926-1935 (2026).
DOI：

Sheng, Q. et al. Tunable structured laser over full spatial spectrum. Light: Science & Applications, 15, 1926-1935 (2026). DOI： 10.1038/s41377-026-02243-3.

摘要

Abstract

Modern tunable lasers are indispensable instruments in fundamental science and optical frequency applications. With the growing interest in structured light

there's a need for tunable structured lasers with high transverse electromagnetic (TEM) modal purity across a broad spatial spectrum

but no commercial solutions exist. Here

we present the first tunable structured laser that can emit all possible single TEM modes with extremely high purity over a wide range. This is achieved by the collaborative use of intracavity pump geometry and astigmatic detuning to selectively gain a desired mode while blockading others. Our astigmatic oscillator can tunably generate any TEM mode within the spatial bandwidth

achieving over 40

000 orthogonal Hermite-Gauss modes in the experiment

and each can be further expanded into numerous Hermite-Laguerre-Gauss modes via unitary transformation. This approach does not require extra intracavity beam shaping components

offering a promising design for commercially available structured lasers with full spatial spectrum tunability.

关键词

Keywords

references

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