• Chinese Optics Letters
  • Vol. 19, Issue 9, 093201 (2021)
Jiajun Song1、2, Zhaohua Wang1、5、*, Xianzhi Wang1、2, Renchong Lü3, Hao Teng1, Jiangfeng Zhu3, and Zhiyi Wei1、2、4、**
Author Affiliations
  • 1Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 2University of Chinese Academy of Sciences, Beijing 100049, China
  • 3School of Physics and Optoelectronic Engineering, Xidian University, Xi’an 710071, China
  • 4Songshan Lake Materials Laboratory, Dongguan 523808, China
  • 5CAS Center for Excellence in Ultra-intense Laser Science, Shanghai 201800, China
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    Abstract

    We demonstrate nonlinear pulse compression of an 8 kHz Nd:YVO4 picosecond laser using the multi-pass-cell (MPC) technique with fused silica as the nonlinear medium. The pulse duration is compressed from 12.5 ps to 601 fs, corresponding to a pulse shortening factor of 20.8. The output pulse energy is 154 μJ with an efficiency of 74.5%. To the best of our knowledge, this is the highest pulse compression ratio achieved in a single-stage MPC with bulk material as the nonlinear medium. The laser power stability and the beam quality (M2) before and after the MPC are also experimentally studied. Both the laser power stability and the beam quality are barely deteriorated by the MPC device.
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    Jiajun Song, Zhaohua Wang, Xianzhi Wang, Renchong Lü, Hao Teng, Jiangfeng Zhu, Zhiyi Wei. Generation of 601 fs pulse from an 8 kHz Nd:YVO4 picosecond laser by multi-pass-cell spectral broadening[J]. Chinese Optics Letters, 2021, 19(9): 093201
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    Category: Ultrafast Optics and Attosecond/High-field Physics
    Received: Dec. 7, 2020
    Accepted: Mar. 3, 2021
    Posted: May. 24, 2021
    Published Online: May. 26, 2021
    The Author Email: Zhaohua Wang (zhwang@iphy.ac.cn), Zhiyi Wei (zywei@iphy.ac.cn)