中国物理B ›› 2022, Vol. 31 ›› Issue (5): 54213-054213.doi: 10.1088/1674-1056/ac3a5b

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Noncollinear phase-matching geometries in ultra-broadband quasi-parametric amplification

Ji Wang(王佶)1, Yanqing Zheng(郑燕青)2, and Yunlin Chen(陈云琳)1,†   

  1. 1 Institute of Applied Mic-Nano Materials, School of Science, Beijing Jiaotong University, Beijing 100044, China;
    2 School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
  • 收稿日期:2021-10-21 修回日期:2021-11-04 发布日期:2022-04-09
  • 通讯作者: Yunlin Chen,E-mail:ylchen@bjtu.edu.cn E-mail:ylchen@bjtu.edu.cn
  • 基金资助:
    This work was supported by the National Natural Science Foundation of China (Grant No.51832009) and the Fundamental Research Funds for the Central Universities,China (Grant No.2019YJS209).

Noncollinear phase-matching geometries in ultra-broadband quasi-parametric amplification

Ji Wang(王佶)1, Yanqing Zheng(郑燕青)2, and Yunlin Chen(陈云琳)1,†   

  1. 1 Institute of Applied Mic-Nano Materials, School of Science, Beijing Jiaotong University, Beijing 100044, China;
    2 School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
  • Received:2021-10-21 Revised:2021-11-04 Published:2022-04-09
  • Contact: Yunlin Chen,E-mail:ylchen@bjtu.edu.cn E-mail:ylchen@bjtu.edu.cn
  • About author:2021-11-17
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (Grant No.51832009) and the Fundamental Research Funds for the Central Universities,China (Grant No.2019YJS209).

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摘要： Optical parametric chirped pulse amplification (OPCPA) shows great potential in producing ultrashort high-intensity pulses because of its large gain bandwidth. Quasi-parametric chirped pulse amplification (QPCPA) may further extend the bandwidth. However, behavior of QPCPA at a limited pump intensity (e.g., ≤ 5 GW/cm2 in a nanosecond pumped QPCPA) has not yet been investigated fully. We discuss detailedly the ultra-broadband amplification and the noncollinear phase-matching geometry in QPCPA, model and develop a novel noncollinear geometry in QPCPA, namely triple-wavelength phase-matching geometry, which provides two additional phase-matching points around the phase-matching point at the central wavelength. Our analysis demonstrates that the triple-wavelength phase-matching geometry can support stable, ultra-broadband amplification in QPCPA. The numerical simulation results show that ultrashort pulse with a pulse duration of 7.92 fs can be achieved in QPCPA when the pump intensity is limited to 5 GW/cm2, calculated using the nonlinear coefficient of YCa4O(BO3)3.

关键词: quasi-parametric amplification, noncollinear phase-matching geometry, nonlinear optics, ultrafast optics

Abstract: Optical parametric chirped pulse amplification (OPCPA) shows great potential in producing ultrashort high-intensity pulses because of its large gain bandwidth. Quasi-parametric chirped pulse amplification (QPCPA) may further extend the bandwidth. However, behavior of QPCPA at a limited pump intensity (e.g., ≤ 5 GW/cm2 in a nanosecond pumped QPCPA) has not yet been investigated fully. We discuss detailedly the ultra-broadband amplification and the noncollinear phase-matching geometry in QPCPA, model and develop a novel noncollinear geometry in QPCPA, namely triple-wavelength phase-matching geometry, which provides two additional phase-matching points around the phase-matching point at the central wavelength. Our analysis demonstrates that the triple-wavelength phase-matching geometry can support stable, ultra-broadband amplification in QPCPA. The numerical simulation results show that ultrashort pulse with a pulse duration of 7.92 fs can be achieved in QPCPA when the pump intensity is limited to 5 GW/cm2, calculated using the nonlinear coefficient of YCa4O(BO3)3.

Key words: quasi-parametric amplification, noncollinear phase-matching geometry, nonlinear optics, ultrafast optics

中图分类号:  (Nonlinear optics)

  • 42.65.-k
42.65.Yj (Optical parametric oscillators and amplifiers)