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Chin. Phys. B, 2025, Vol. 34(8): 084204    DOI: 10.1088/1674-1056/adcf8b
ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS Prev   Next  

Generation ofWatt-level Kerr-lens mode-locked Yb:CYA laser at 1-GHz repetition rate

Guodong Zhao(赵国栋)1,2, Junyi Ma(马骏逸)1,2, Hainian Han(韩海年)1,3, Zhaohua Wang(王兆华)1, and Zhiyi Wei(魏志义)1,2,3,4,†
1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
2 University of Chinese Academy of Sciences, Beijing 100049, China;
3 Songshan Lake Materials Laboratory, Dongguan 523808, China;
4 Quantum Science Center of Guangdong-HongKong-Macao Greater Bay Area, Shenzhen 518045, China
Abstract  We report on a Kerr-lens mode-locked (KLM) femtosecond Yb:CaYAlO$_{4}$ (Yb:CYA) laser operating at a repetition rate of 1.04 GHz, pumped by a single-mode fiber laser. The laser delivers an average output power of 1.37 W with a pulse duration of 109 fs. Potential improvements, including scaling the pump power, increasing the repetition rate, and further reducing the pulse duration, are discussed. This study contributes to the advancement of Watt-level GHz femtosecond laser generation and its applications.
Keywords:  all-solid-state ultrafast laser      high repetition rate      Kerr-lens mode-locking      Yb:CYA  
Received:  22 March 2025      Revised:  21 April 2025      Accepted manuscript online:  23 April 2025
PACS:  42.65.Re (Ultrafast processes; optical pulse generation and pulse compression)  
  42.60.Da (Resonators, cavities, amplifiers, arrays, and rings)  
  42.55.Rz (Doped-insulator lasers and other solid state lasers)  
  42.55.Xi (Diode-pumped lasers)  
Fund: Project supported by the National Key Research and Development Program of China (Grant No. 2022YFB4600158).
Corresponding Authors:  Zhiyi Wei     E-mail:  zywei@iphy.ac.cn

Cite this article: 

Guodong Zhao(赵国栋), Junyi Ma(马骏逸), Hainian Han(韩海年), Zhaohua Wang(王兆华), and Zhiyi Wei(魏志义) Generation ofWatt-level Kerr-lens mode-locked Yb:CYA laser at 1-GHz repetition rate 2025 Chin. Phys. B 34 084204

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