Understanding low-threshold mode-locking at multi-GHz repetition rate

Wenbin He; Meng Pang; Philip St. J. Russell

doi:10.1038/s41377-024-01682-0

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Understanding low-threshold mode-locking at multi-GHz repetition rate

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- Understanding low-threshold mode-locking at multi-GHz repetition rate
- Understanding low-threshold mode-locking at multi-GHz repetition rate
- LSA 2025年14卷第1期页码：13-14
- Affiliations：
  
  1.Russell Centre for Advanced Lightwave Science, Shanghai Institute of Optics and Fine Mechanics and Hangzhou Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  2.State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science, Shanghai Institute of Optics and Fine Mechanics CAS, Shanghai 201800, China
- Author bio：
  
  Wenbin He (hewenbin@siom.ac.cn)
- Funds：
- DOI：10.1038/s41377-024-01682-0
  中图分类号：
- 纸质出版日期：2025-01-31，
  
  网络出版日期：2025-01-02，
- Accepted：
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Understanding low-threshold mode-locking at multi-GHz repetition rate[J]. LSA, 2025,14(1):13-14.

He, W. B., Pang, M. & Russell, P. St. J. Understanding low-threshold mode-locking at multi-GHz repetition rate. Light: Science & Applications, 14, 13-14 (2025).
Understanding low-threshold mode-locking at multi-GHz repetition rate[J]. LSA, 2025,14(1):13-14. DOI： 10.1038/s41377-024-01682-0.

He, W. B., Pang, M. & Russell, P. St. J. Understanding low-threshold mode-locking at multi-GHz repetition rate. Light: Science & Applications, 14, 13-14 (2025). DOI： 10.1038/s41377-024-01682-0.

摘要

Abstract

Continuous-wave mode-locking at multi-GHz repetition rates is achieved in an ultrashort laser cavity at critical pulse energies 100 times lower than predicted by conventional theory. The authors reveal that dynamic gain depletion and recovery between consecutive round-trips is the key factor behind a low-pulse-energy transition from Q-switched mode-locking (QSML) to continuous-wave mode-locking (CWML). As well as providing new insight into gain dynamics

the results suggest a practical route to low-threshold lasing at very high-repetition rates.

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references

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