中国物理B ›› 2023, Vol. 32 ›› Issue (12): 124210-124210.doi: 10.1088/1674-1056/acfa86

所属专题: SPECIAL TOPIC — Optical field manipulation

• • 上一篇    下一篇

Calibration of quantitative rescattering model for simulating vortex high-order harmonic generation driven by Laguerre-Gaussian beam with nonzero orbital angular momentum

Jiaxin Han(韩嘉鑫)1, Zhong Guan(管仲)1, Beiyu Wang(汪倍羽)1, and Cheng Jin(金成)1,2,†   

  1. 1 Department of Applied Physics, Nanjing University of Science and Technology, Nanjing 210094, China;
    2 MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing, Nanjing University of Science and Technology, Nanjing 210094, China
  • 收稿日期:2023-07-05 修回日期:2023-08-30 接受日期:2023-09-18 出版日期:2023-11-14 发布日期:2023-11-30
  • 通讯作者: Cheng Jin E-mail:cjin@njust.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos.12274230, 91950102, and 11834004), the Funding of Nanjing University of Science and Technology (Grant No.TSXK2022D005), and the Postgraduate Research & Practice Innovation Program of Jiangsu Province of China (Grant No.KYCX23_0443).

Calibration of quantitative rescattering model for simulating vortex high-order harmonic generation driven by Laguerre-Gaussian beam with nonzero orbital angular momentum

Jiaxin Han(韩嘉鑫)1, Zhong Guan(管仲)1, Beiyu Wang(汪倍羽)1, and Cheng Jin(金成)1,2,†   

  1. 1 Department of Applied Physics, Nanjing University of Science and Technology, Nanjing 210094, China;
    2 MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing, Nanjing University of Science and Technology, Nanjing 210094, China
  • Received:2023-07-05 Revised:2023-08-30 Accepted:2023-09-18 Online:2023-11-14 Published:2023-11-30
  • Contact: Cheng Jin E-mail:cjin@njust.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos.12274230, 91950102, and 11834004), the Funding of Nanjing University of Science and Technology (Grant No.TSXK2022D005), and the Postgraduate Research & Practice Innovation Program of Jiangsu Province of China (Grant No.KYCX23_0443).

摘要: We calibrate the macroscopic vortex high-order harmonic generation (HHG) obtained by the quantitative rescattering (QRS) model to compute single-atom induced dipoles against that by solving the time-dependent Schrödinger equation (TDSE). We show that the QRS perfectly agrees with the TDSE under the favorable phase-matching condition, and the QRS can accurately predict the main features in the spatial profiles of vortex HHG if the phase-matching condition is not good. We uncover that harmonic emissions from short and long trajectories are adjusted by the phase-matching condition through the time-frequency analysis and the QRS can simulate the vortex HHG accurately only when the interference between two trajectories is absent. This work confirms that it is an efficient way to employ the QRS model in the single-atom response for precisely simulating the macroscopic vortex HHG.

关键词: high-order harmonic generation, quantitative rescattering model, time-dependent Schrödinger equation, macroscopic propagation, orbital angular momentum, Laguerre-Gaussian beam

Abstract: We calibrate the macroscopic vortex high-order harmonic generation (HHG) obtained by the quantitative rescattering (QRS) model to compute single-atom induced dipoles against that by solving the time-dependent Schrödinger equation (TDSE). We show that the QRS perfectly agrees with the TDSE under the favorable phase-matching condition, and the QRS can accurately predict the main features in the spatial profiles of vortex HHG if the phase-matching condition is not good. We uncover that harmonic emissions from short and long trajectories are adjusted by the phase-matching condition through the time-frequency analysis and the QRS can simulate the vortex HHG accurately only when the interference between two trajectories is absent. This work confirms that it is an efficient way to employ the QRS model in the single-atom response for precisely simulating the macroscopic vortex HHG.

Key words: high-order harmonic generation, quantitative rescattering model, time-dependent Schrödinger equation, macroscopic propagation, orbital angular momentum, Laguerre-Gaussian beam

中图分类号:  (Frequency conversion; harmonic generation, including higher-order harmonic generation)

  • 42.65.Ky
42.65.Re (Ultrafast processes; optical pulse generation and pulse compression) 42.65.Yj (Optical parametric oscillators and amplifiers) 42.65.-k (Nonlinear optics)