High-order femtosecond vortices up to the 30th order generated from a powerful mode-locked Hermite-Gaussian laser

Hongyu Liu; Lisong Yan; Hongshan Chen; Xin Liu; Heyan Liu; Soo Hoon Chew; Alexander Gliserin; Qing Wang; Jinwei Zhang

doi:10.1038/s41377-023-01241-z

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High-order femtosecond vortices up to the 30th order generated from a powerful mode-locked Hermite-Gaussian laser

Original Articles

- High-order femtosecond vortices up to the 30th order generated from a powerful mode-locked Hermite-Gaussian laser
- Light: Science & Applications Vol. 12, Issue 10, Pages: 2084-2096(2023)
- Affiliations：
  
  1.School of Optical and Electronic Information and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
  2.Department of Optics and Mechatronics Engineering, College of Nanoscience and Nanotechnology, Pusan National University, Busan 46241, South Korea
  3.Max Planck Center for Attosecond Science, Max Planck POSTECH/Korea Research Initiative, Pohang 37673, South Korea
  4.School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China
- Author bio：
  
  Qing Wang (qingwang@bit.edu.cn)
  Jinwei Zhang (jinweizhang@hust.edu.cn)
- Funds：
- DOI：10.1038/s41377-023-01241-z
  CLC：
- Published：31 October 2023，
  
  Published Online：30 August 2023，
  
  Received：20 February 2023，
  
  Revised：09 July 2023，
  
  Accepted：19 July 2023
- Accepted：
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Liu, H. Y. et al. High-order femtosecond vortices up to the 30th order generated from a powerful mode-locked Hermite-Gaussian laser. Light: Science & Applications, 12, 2084-2096 (2023).
DOI：

Liu, H. Y. et al. High-order femtosecond vortices up to the 30th order generated from a powerful mode-locked Hermite-Gaussian laser. Light: Science & Applications, 12, 2084-2096 (2023). DOI： 10.1038/s41377-023-01241-z.

摘要

Abstract

Femtosecond vortex beams are of great scientific and practical interest because of their unique phase properties in both the longitudinal and transverse modes

enabling multi-dimensional quantum control of light fields. Until now

generating femtosecond vortex beams for applications that simultaneously require ultrashort pulse duration

high power

high vortex order

and a low cost and compact laser source has been very challenging due to the limitations of available generation methods. Here

we present a compact apparatus that generates powerful high-order femtosecond vortex pulses via astigmatic mode conversion from a mode-locked Hermite-Gaussian Yb: KGW laser oscillator in a hybrid scheme using both the translation-based off-axis pumping and the angle-based non-collinear pumping techniques. This hybrid scheme enables the generation of femtosecond vortices with a continuously tunable vortex order from the 1st up to the 30th order

which is the highest order obtained from any femtosecond vortex laser source based on a mode-locked oscillator. The average powers and pulse durations of all resulting vortex pulses are several hundred milliwatts and < 650 fs

respectively. In particular

424-fs 11th-order vortex pulses have been achieved with an average power of 1.6 W

several times more powerful than state-of-the-art oscillator-based femtosecond vortex sources.

关键词

Keywords

references

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