中国物理B ›› 2022, Vol. 31 ›› Issue (9): 94210-094210.doi: 10.1088/1674-1056/ac6018

• • 上一篇    下一篇

Bandwidth expansion and pulse shape optimized for 10 PW laser design via spectral shaping

Da-Wei Li(李大为)1,4, Tao Wang(王韬)2,†, Xiao-Lei Yin(尹晓蕾)3, Li Wang(王利)1, Jia-Mei Li(李佳美)1,4, Hui Yu(余惠)1,4, Yong Cui(崔勇)2, Tian-Xiong Zhang(张天雄)2, Xing-Qiang Lu(卢兴强)1,‡, and Guang Xu(徐光)1   

  1. 1 Key Laboratory of High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;
    2 Shanghai Institute of Laser Plasma, Chinese Academy of Engineering Physics, Shanghai 201800, China;
    3 Changzhou Institute of Technology, School of Sciences, Changzhou 213032, China;
    4 Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2021-12-30 修回日期:2022-03-10 接受日期:2022-03-23 出版日期:2022-08-19 发布日期:2022-08-24
  • 通讯作者: Tao Wang, Xing-Qiang Lu E-mail:twang@siom.ac.cn;xingqianglu@siom.ac.cn
  • 基金资助:
    Project supported by the International Partnership Program of Chinese Academy of Sciences (Grant No. 181231KYSB20170022) and the Natural Science Foundation of Jiangsu Higher Education Institutions of China (Grant No. 20KJB140020).

Bandwidth expansion and pulse shape optimized for 10 PW laser design via spectral shaping

Da-Wei Li(李大为)1,4, Tao Wang(王韬)2,†, Xiao-Lei Yin(尹晓蕾)3, Li Wang(王利)1, Jia-Mei Li(李佳美)1,4, Hui Yu(余惠)1,4, Yong Cui(崔勇)2, Tian-Xiong Zhang(张天雄)2, Xing-Qiang Lu(卢兴强)1,‡, and Guang Xu(徐光)1   

  1. 1 Key Laboratory of High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;
    2 Shanghai Institute of Laser Plasma, Chinese Academy of Engineering Physics, Shanghai 201800, China;
    3 Changzhou Institute of Technology, School of Sciences, Changzhou 213032, China;
    4 Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2021-12-30 Revised:2022-03-10 Accepted:2022-03-23 Online:2022-08-19 Published:2022-08-24
  • Contact: Tao Wang, Xing-Qiang Lu E-mail:twang@siom.ac.cn;xingqianglu@siom.ac.cn
  • Supported by:
    Project supported by the International Partnership Program of Chinese Academy of Sciences (Grant No. 181231KYSB20170022) and the Natural Science Foundation of Jiangsu Higher Education Institutions of China (Grant No. 20KJB140020).

摘要: We demonstrated a scheme of bandwidth expansion and pulse shape optimized to afford 10 PW laser design via spectral shaping, which uses the existing Nd:glass amplifier chain of the SG PW laser. Compared to the amplified pulse with a gain-narrowing effect, the required parameters of injected pulse energy, spectral bandwidth, and shape are analyzed, together with their influence on the system B-integral, energy output capability, and temporal intensity contrast. A bandwidth expansion to 7 nm by using LiNbO3 birefringent spectral shaping resulted in an output energy of 2 kJ in a proof-of-principle experiment. The results are consistent with the theoretical prediction which suggests that the amplifier chain of SG PW laser is capable of achieving 6 kJ at the bandwidth of 7 nm and the B-integral < π . This will support a 10 PW laser with a compressed pulse energy of 4.8 kJ (efficiency=80%) at 480 fs.

关键词: SG PW laser, bandwidth expansion, B-integral, spectral shaping

Abstract: We demonstrated a scheme of bandwidth expansion and pulse shape optimized to afford 10 PW laser design via spectral shaping, which uses the existing Nd:glass amplifier chain of the SG PW laser. Compared to the amplified pulse with a gain-narrowing effect, the required parameters of injected pulse energy, spectral bandwidth, and shape are analyzed, together with their influence on the system B-integral, energy output capability, and temporal intensity contrast. A bandwidth expansion to 7 nm by using LiNbO3 birefringent spectral shaping resulted in an output energy of 2 kJ in a proof-of-principle experiment. The results are consistent with the theoretical prediction which suggests that the amplifier chain of SG PW laser is capable of achieving 6 kJ at the bandwidth of 7 nm and the B-integral < π . This will support a 10 PW laser with a compressed pulse energy of 4.8 kJ (efficiency=80%) at 480 fs.

Key words: SG PW laser, bandwidth expansion, B-integral, spectral shaping

中图分类号:  (Applications)

  • 42.40.My
42.25.Lc (Birefringence) 42.15.Eq (Optical system design)