Sub-100 fs watt-level Kerr-lens mode-locked Yb:CaYAlO4 laser with a gigahertz repetition rate

We report a 1.04 GHz high-power Kerr-lens mode-locked Yb:CaYAlO 4 laser pumped by a single-mode fiber laser at 976 nm. Based on a bow-tie cavity, stable unidirectional mode-locked operation is obtained with an output coupler of 1.6%. The oscillator delivers pulses with an average power of 1.46 W and...

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Bibliographic Details
Published in:Frontiers in physics 2023-01, Vol.11
Main Authors: Zhang, Ziyue, Ma, Junyi, Zhao, Guodong, Shao, Xiaodong, Zheng, Yunzhong, Han, Hainian, Wei, Zhiyi
Format: Article
Language:English
Subjects:
all-solid-state-laser
Kerr-lens mode-locked
optical frequency comb
ultrafast Laser
Yb:CYA
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Summary:We report a 1.04 GHz high-power Kerr-lens mode-locked Yb:CaYAlO 4 laser pumped by a single-mode fiber laser at 976 nm. Based on a bow-tie cavity, stable unidirectional mode-locked operation is obtained with an output coupler of 1.6%. The oscillator delivers pulses with an average power of 1.46 W and with the pulse duration of 99 fs, which, to the best of our knowledge, is the first gigahertz-level Kerr-lens mode-locked laser based on the Yb:CaYAlO 4 gain medium. We believe that the watt-level solid-state femtosecond laser at GHz would be an excellent source for developing time-resolved broadband dual-comb spectroscopy.
ISSN:2296-424X
2296-424X
DOI:10.3389/fphy.2023.1116054