Journal
OPTICS LETTERS
Volume 46, Issue 8, Pages 1979-1982Publisher
Optica Publishing Group
DOI: 10.1364/OL.423249
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Funding
- National Natural Science Foundation of China [51632004, 51890863, 52025021]
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In this study, we demonstrate the first laser-diode pumped multi-gigahertz self-mode-locked alexandrite femtosecond lasers. Stable mode-locked laser with a repetition rate of 3.6 GHz and a pulse width of 237 fs, as well as second-harmonic mode-locked pulse with a repetition rate of 7.5 GHz and a pulse width of 201 fs, were successfully achieved. This laser offers high repetition rate and short pulse width, making it suitable for promising applications in modern ultrafast photonics.
We report the laser-diode pumped multi-gigahertz (GHz) self-mode-locked alexandrite femtosecond (fs) lasers for the first time, to the best of our knowledge. Using a simple linear cavity, stable mode-locked laser was achieved with a repetition rate of 3.6 GHz and a pulse width of 237 fs. Additionally, the second-harmonic mode-locked pulse was realized with a repetition rate of 7.5 GHz and a pulse width of 201 fs based on the Fabry-Perot effect generated in the laser cavity. It was observed that this laser possesses advantages of high repetition rate and short pulse width that enable the development of promising applications in modern ultrafast photonics. (C) 2021 Optical Society of America
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