中国物理B ›› 2015, Vol. 24 ›› Issue (6): 65202-065202.doi: 10.1088/1674-1056/24/6/065202

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇    下一篇

High-order optical vortex harmonics generated by relativistic femtosecond laser pulse

韩玉晶a b, 廖国前a, 陈黎明a d, 李玉同a d, 王伟民a d, 张杰c d   

  1. a Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences (CAS), Beijing 100190, China;
    b Department of Physics, Heze University, Heze 274015, China;
    c Key Laboratory for Laser Plasmas and Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China;
    d IFSA Collaborative Innovation Center, Shanghai Jiao Tong University, Shanghai 200240, China
  • 收稿日期:2015-01-07 修回日期:2015-02-01 出版日期:2015-06-05 发布日期:2015-06-05
  • 基金资助:
    Project supported by the National Basic Research Program of China (Grant Nos. 2013CBA01501 and 2013CBA01504), the National Key Scientific Instrument and Equipment Development Project, China (Grant No. 2012YQ120047), CAS Key Program and National Natural Science Foundation of China (Grant Nos. 11135012 and 11375262), and a Project of Higher Educational Science and Technology Program of Shandong Province, China (Grant No. J11LA52).

High-order optical vortex harmonics generated by relativistic femtosecond laser pulse

Han Yu-Jing (韩玉晶)a b, Liao Guo-Qian (廖国前)a, Chen Li-Ming (陈黎明)a d, Li Yu-Tong (李玉同)a d, Wang Wei-Min (王伟民)a d, Zhang Jie (张杰)c d   

  1. a Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences (CAS), Beijing 100190, China;
    b Department of Physics, Heze University, Heze 274015, China;
    c Key Laboratory for Laser Plasmas and Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China;
    d IFSA Collaborative Innovation Center, Shanghai Jiao Tong University, Shanghai 200240, China
  • Received:2015-01-07 Revised:2015-02-01 Online:2015-06-05 Published:2015-06-05
  • Contact: Chen Li-Ming E-mail:lmchen@iphy.ac.cn
  • About author:52.38.-r; 42.65.Ky; 42.50.Tx
  • Supported by:
    Project supported by the National Basic Research Program of China (Grant Nos. 2013CBA01501 and 2013CBA01504), the National Key Scientific Instrument and Equipment Development Project, China (Grant No. 2012YQ120047), CAS Key Program and National Natural Science Foundation of China (Grant Nos. 11135012 and 11375262), and a Project of Higher Educational Science and Technology Program of Shandong Province, China (Grant No. J11LA52).

摘要: Harmonics generated by an intense femtosecond Gaussian laser pulse normally incident on a spiral-shaped thin foil target were studied. By using two-dimensional (2D) particle-in-cell (PIC) simulation, we observed evident odd harmonics signals in the reflection direction and found that the reflected field has a helical structure determined by the target shape. This method provides a new way to generate an intense ultraviolet vortex with high-order topological charge by use of ultrahigh intense laser-driven harmonics.

关键词: optical vortex, laser plasma, harmonics

Abstract: Harmonics generated by an intense femtosecond Gaussian laser pulse normally incident on a spiral-shaped thin foil target were studied. By using two-dimensional (2D) particle-in-cell (PIC) simulation, we observed evident odd harmonics signals in the reflection direction and found that the reflected field has a helical structure determined by the target shape. This method provides a new way to generate an intense ultraviolet vortex with high-order topological charge by use of ultrahigh intense laser-driven harmonics.

Key words: optical vortex, laser plasma, harmonics

中图分类号:  (Laser-plasma interactions)

  • 52.38.-r
42.65.Ky (Frequency conversion; harmonic generation, including higher-order harmonic generation) 42.50.Tx (Optical angular momentum and its quantum aspects)