中国物理B ›› 2016, Vol. 25 ›› Issue (12): 124207-124207.doi: 10.1088/1674-1056/25/12/124207

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Nonlinear compression of picosecond chirped pulse from thin-disk amplifier system through a gas-filled hollow-core fiber

Jun Lu(陆俊), Zhi-Yuan Huang(黄志远), Ding Wang(王丁), Yi Xu(许毅), Yan-Qi Liu(刘彦祺), Xiao-Yang Guo(郭晓杨), Wen-Kai Li(黎文开), Fen-Xiang Wu(吴分翔), Zheng-Zheng Liu(刘征征), Yu-Xin Leng(冷雨欣)   

  1. 1. School of Physics Science and Engineering, Tongji University, Shanghai 200092, China;
    2. State Key Laboratory of High Field Laser Physics, Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;
    3. University of Chinese Academy of Sciences, Beijing 100049, China;
    4. Department of Physics, Shanghai University, Shanghai 200444, China
  • 收稿日期:2016-05-30 修回日期:2016-07-15 出版日期:2016-12-05 发布日期:2016-12-05
  • 通讯作者: Yu-Xin Leng E-mail:lengyuxin@siom.ac.cn
  • 基金资助:

    Project supported by the National Basic Research Program of China (Grant No. 2011CB808101), the Funds from the Chinese Academy of Sciences, and the National Natural Science Foundation of China (Grant Nos. 1112790, 10734080, 61221064, 60908008, and 61078037).

Nonlinear compression of picosecond chirped pulse from thin-disk amplifier system through a gas-filled hollow-core fiber

Jun Lu(陆俊)1,2,3, Zhi-Yuan Huang(黄志远)2,4, Ding Wang(王丁)2, Yi Xu(许毅)2, Yan-Qi Liu(刘彦祺)2, Xiao-Yang Guo(郭晓杨)2, Wen-Kai Li(黎文开)2, Fen-Xiang Wu(吴分翔)2, Zheng-Zheng Liu(刘征征)2, Yu-Xin Leng(冷雨欣)2   

  1. 1. School of Physics Science and Engineering, Tongji University, Shanghai 200092, China;
    2. State Key Laboratory of High Field Laser Physics, Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;
    3. University of Chinese Academy of Sciences, Beijing 100049, China;
    4. Department of Physics, Shanghai University, Shanghai 200444, China
  • Received:2016-05-30 Revised:2016-07-15 Online:2016-12-05 Published:2016-12-05
  • Contact: Yu-Xin Leng E-mail:lengyuxin@siom.ac.cn
  • Supported by:

    Project supported by the National Basic Research Program of China (Grant No. 2011CB808101), the Funds from the Chinese Academy of Sciences, and the National Natural Science Foundation of China (Grant Nos. 1112790, 10734080, 61221064, 60908008, and 61078037).

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摘要：

We theoretically study the nonlinear compression of a 20-mJ, 1030-nm picosecond chirped pulse from the thin-disk amplifier in a krypton gas-filled hollow-core fiber. The chirp from the thin-disk amplifier system has little influence on the initial pulse, however, it shows an effect on the nonlinear compression in hollow-core fiber. We use a large diameter hollow waveguide to restrict undesirable nonlinear effects such as ionization; on the other hand, we employ suitable gas pressure and fiber length to promise enough spectral broadening; with 600-μm, 6-bar (1 bar=105 Pa), 1.8-m hollow fiber, we obtain 31.5-fs pulse. Moreover, we calculate and discuss the optimal fiber lengths and gas pressures with different initial durations induced by different grating compression angles for reaching a given bandwidth. These results are meaningful for a compression scheme from picoseconds to femtoseconds.

关键词: picosecond pulse, hollow-core fiber, thin-disk amplifier, spectrum broadening

Abstract:

We theoretically study the nonlinear compression of a 20-mJ, 1030-nm picosecond chirped pulse from the thin-disk amplifier in a krypton gas-filled hollow-core fiber. The chirp from the thin-disk amplifier system has little influence on the initial pulse, however, it shows an effect on the nonlinear compression in hollow-core fiber. We use a large diameter hollow waveguide to restrict undesirable nonlinear effects such as ionization; on the other hand, we employ suitable gas pressure and fiber length to promise enough spectral broadening; with 600-μm, 6-bar (1 bar=105 Pa), 1.8-m hollow fiber, we obtain 31.5-fs pulse. Moreover, we calculate and discuss the optimal fiber lengths and gas pressures with different initial durations induced by different grating compression angles for reaching a given bandwidth. These results are meaningful for a compression scheme from picoseconds to femtoseconds.

Key words: picosecond pulse, hollow-core fiber, thin-disk amplifier, spectrum broadening

中图分类号:  (Ultrafast processes; optical pulse generation and pulse compression)

  • 42.65.Re
42.65.Jx (Beam trapping, self-focusing and defocusing; self-phase modulation) 42.81.Qb (Fiber waveguides, couplers, and arrays) 42.55.Xi (Diode-pumped lasers)