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Chin. Phys. B, 2021, Vol. 30(9): 094206    DOI: 10.1088/1674-1056/ac11d3

All-fiber laser seeded femtosecond Yb:KGW solid state regenerative amplifier

Renchong Lv(吕仁冲)1,2, Hao Teng(滕浩)2,3,4,†, Jiajun Song(宋贾俊)2,3, Renzhu Kang(康仁铸)1,2, Jiangfeng Zhu(朱江峰)1,‡, and Zhiyi Wei(魏志义)2,3,4,§
1 School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China;
2 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
3 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
4 Songshan Lake Materials Laboratory, Dongguan 523808, China
Abstract  A high efficiency compact Yb:KGW regenerative amplifier using an all-fiber laser seed source was comprehensively studied. With thermal lensing effect compensated by the cavity design, the compressed pulses with energy of 1 mJ at 1 kHz and 0.4 mJ at 10 kHz in sub-400-fs pulse duration using chirped fiber Bragg grating (CFBG) stretcher were demonstrated. A modified Frantz-Nodvik equation was developed to emulate the dynamic behavior of the regenerative amplifier. The simulation results were in good agreement with the experiment. Numerical simulations and experimental results show that the scheme can be scalable to higher energy of multi-mJ, sub-300 fs pulses.
Keywords:  regenerative amplifier      ultrafast laser      hybrid laser amplifier  
Received:  27 May 2021      Revised:  25 June 2021      Accepted manuscript online:  07 July 2021
PACS:  42.55.Xi (Diode-pumped lasers)  
  42.60.Da (Resonators, cavities, amplifiers, arrays, and rings)  
Fund: Project supported by Major Program of the National Natural Science Foundation of China (Grant No. 12034020), the National Natural Science Foundation of China (Grant No. 61805274), the National Key R&D Program of China (Grant No. 2018YFB1107201), and the Synergic Extreme Condition User Facility.
Corresponding Authors:  Hao Teng, Jiangfeng Zhu, Zhiyi Wei     E-mail:;;

Cite this article: 

Renchong Lv(吕仁冲), Hao Teng(滕浩), Jiajun Song(宋贾俊), Renzhu Kang(康仁铸), Jiangfeng Zhu(朱江峰), and Zhiyi Wei(魏志义) All-fiber laser seeded femtosecond Yb:KGW solid state regenerative amplifier 2021 Chin. Phys. B 30 094206

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