中国物理B ›› 2024, Vol. 33 ›› Issue (5): 54209-054209.doi: 10.1088/1674-1056/ad2bf0

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Optimization of extreme ultraviolet vortex beam based on high harmonic generation

Bo Xiao(肖礴)1, Yi-Wen Zhao(赵逸文)1, Fang-Jing Cheng(程方晶)1, Ge-Wen Wang(王革文)1, Wei Jiang(姜威)1, Yi-Chen Wang(王一琛)1, Jie Hu(胡杰)1, Hong-Jing Liang(梁红静)2,†, and Ri Ma(马日)1,‡   

  1. 1 Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;
    2 College of Science, Jilin Institute of Chemical Technology, Jilin 132022, China
  • 收稿日期:2023-12-08 修回日期:2024-02-03 接受日期:2024-02-22 出版日期:2024-05-20 发布日期:2024-05-20
  • 通讯作者: Hong-Jing Liang, Ri Ma E-mail:lianghongjing@jlict.edu.cn;rma@jlu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11974137, 92250306, and 12304302), the National Key Program for Science and Technology Research and Development (Grant No. 2019YFA0307700), the Natural Science Foundation of Jilin Province, China (Grant Nos. YDZJ202101ZYTS157 and YDZJ202201ZYTS314), and the Scientific Research Foundation of Jilin Provincial Education Department, China (Grant No. JJKH20230283KJ).

Optimization of extreme ultraviolet vortex beam based on high harmonic generation

Bo Xiao(肖礴)1, Yi-Wen Zhao(赵逸文)1, Fang-Jing Cheng(程方晶)1, Ge-Wen Wang(王革文)1, Wei Jiang(姜威)1, Yi-Chen Wang(王一琛)1, Jie Hu(胡杰)1, Hong-Jing Liang(梁红静)2,†, and Ri Ma(马日)1,‡   

  1. 1 Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;
    2 College of Science, Jilin Institute of Chemical Technology, Jilin 132022, China
  • Received:2023-12-08 Revised:2024-02-03 Accepted:2024-02-22 Online:2024-05-20 Published:2024-05-20
  • Contact: Hong-Jing Liang, Ri Ma E-mail:lianghongjing@jlict.edu.cn;rma@jlu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11974137, 92250306, and 12304302), the National Key Program for Science and Technology Research and Development (Grant No. 2019YFA0307700), the Natural Science Foundation of Jilin Province, China (Grant Nos. YDZJ202101ZYTS157 and YDZJ202201ZYTS314), and the Scientific Research Foundation of Jilin Provincial Education Department, China (Grant No. JJKH20230283KJ).

摘要: In high harmonic generation (HHG), Laguerre-Gaussian (LG) beams are used to generate extreme ultraviolet (XUV) vortices with well-defined orbital angular momentum (OAM), which have potential applications in fields such as microscopy and spectroscopy. An experimental study on the HHG driven by vortex and Gaussian beams is conducted in this work. It is found that the intensity of vortex harmonics is positively correlated with the laser energy and gas pressure. The structure and intensity distribution of the vortex harmonics exhibit significant dependence on the relative position between the gas jet and the laser focus. The ring-like structures observed in the vortex harmonics, and the interference of quantum paths provide an explanation for the distinct structural characteristics. Moreover, by adjusting the relative position between the jet and laser focus, it is possible to discern the contributions from different quantum paths. The optimization of the HH vortex field is applicable to the XUV, which opens up a new way for exploiting the potential in optical spin or manipulating electrons by using the photon with tunable orbital angular momentum.

关键词: high harmonic generation, phase matching, extreme ultraviolet vortex beam, quantum path interference

Abstract: In high harmonic generation (HHG), Laguerre-Gaussian (LG) beams are used to generate extreme ultraviolet (XUV) vortices with well-defined orbital angular momentum (OAM), which have potential applications in fields such as microscopy and spectroscopy. An experimental study on the HHG driven by vortex and Gaussian beams is conducted in this work. It is found that the intensity of vortex harmonics is positively correlated with the laser energy and gas pressure. The structure and intensity distribution of the vortex harmonics exhibit significant dependence on the relative position between the gas jet and the laser focus. The ring-like structures observed in the vortex harmonics, and the interference of quantum paths provide an explanation for the distinct structural characteristics. Moreover, by adjusting the relative position between the jet and laser focus, it is possible to discern the contributions from different quantum paths. The optimization of the HH vortex field is applicable to the XUV, which opens up a new way for exploiting the potential in optical spin or manipulating electrons by using the photon with tunable orbital angular momentum.

Key words: high harmonic generation, phase matching, extreme ultraviolet vortex beam, quantum path interference

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) 47.32.cb (Vortex interactions)