中国物理B ›› 2019, Vol. 28 ›› Issue (10): 103203-103203.doi: 10.1088/1674-1056/ab4278

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇    下一篇

Selection of right-circular-polarized harmonics from p orbital of neon atom by two-color bicircular laser fields

Chang-Long Xia(夏昌龙), Yue-Yue Lan(兰悦跃), Qian-Qian Li(李倩倩), Xiang-Yang Miao(苗向阳)   

  1. 1 College of Physics and Information Engineering, Shanxi Normal University, Linfen 041004, China;
    2 Key Laboratory of Spectral Measurement and Analysis of Shanxi Province, Shanxi Normal University, Linfen 041004, China
  • 收稿日期:2019-07-02 修回日期:2019-08-05 出版日期:2019-10-05 发布日期:2019-10-05
  • 通讯作者: Xiang-Yang Miao E-mail:sxxymiao@126.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11974229, 11504221, and 11404204), the Scientific and Technological Innovation Program of Higher Education Institutions in Shanxi Province, China (Grant No. 2019L0452), the Natural Science Foundation for Young Scientists of Shanxi Province, China (Grant No. 2015021023), and the Program for Top Young Academic Leaders of Higher Learning Institutions of Shanxi Province, China.

Selection of right-circular-polarized harmonics from p orbital of neon atom by two-color bicircular laser fields

Chang-Long Xia(夏昌龙)1,2, Yue-Yue Lan(兰悦跃)1,2, Qian-Qian Li(李倩倩)1,2, Xiang-Yang Miao(苗向阳)1,2   

  1. 1 College of Physics and Information Engineering, Shanxi Normal University, Linfen 041004, China;
    2 Key Laboratory of Spectral Measurement and Analysis of Shanxi Province, Shanxi Normal University, Linfen 041004, China
  • Received:2019-07-02 Revised:2019-08-05 Online:2019-10-05 Published:2019-10-05
  • Contact: Xiang-Yang Miao E-mail:sxxymiao@126.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11974229, 11504221, and 11404204), the Scientific and Technological Innovation Program of Higher Education Institutions in Shanxi Province, China (Grant No. 2019L0452), the Natural Science Foundation for Young Scientists of Shanxi Province, China (Grant No. 2015021023), and the Program for Top Young Academic Leaders of Higher Learning Institutions of Shanxi Province, China.

摘要: The polarization properties of high-order harmonic generation (HHG) in the two-color circularly polarized laser fields are investigated by numerically solving the two-dimensional time-dependent Schrödinger equation. By adding a wavelength of 1600-nm right-circular-polarized field to an 800-nm left-circular-polarized field, HHG is simulated from a real model of neon atom with p orbital, but not from a hydrogen-like atom model with s orbital. The orders of 3n+1 can be selected while the orders of 3n+2 are suppressed by adjusting the intensities of the two pulses. The physical mechanism is analyzed by time-frequency analysis and semiclassical model.

关键词: high-order harmonic generation, circular polarization field, polarization selection

Abstract: The polarization properties of high-order harmonic generation (HHG) in the two-color circularly polarized laser fields are investigated by numerically solving the two-dimensional time-dependent Schrödinger equation. By adding a wavelength of 1600-nm right-circular-polarized field to an 800-nm left-circular-polarized field, HHG is simulated from a real model of neon atom with p orbital, but not from a hydrogen-like atom model with s orbital. The orders of 3n+1 can be selected while the orders of 3n+2 are suppressed by adjusting the intensities of the two pulses. The physical mechanism is analyzed by time-frequency analysis and semiclassical model.

Key words: high-order harmonic generation, circular polarization field, polarization selection

中图分类号:  (Multiphoton ionization and excitation to highly excited states)

  • 32.80.Rm
42.65.Ky (Frequency conversion; harmonic generation, including higher-order harmonic generation) 42.65.Re (Ultrafast processes; optical pulse generation and pulse compression)