Photonics Research, Volume. 12, Issue 12, 3033(2024)

Parity effects in Rydberg-state excitation in intense laser fields

Yang Liu1、†, Xiaopeng Yi2、†, Qi Chen1, Tian Sun1, Hang Lv1,8、*, Shilin Hu3,4,9、*, Wilhelm Becker5, Haifeng Xu1,10、*, and Jing Chen6,7,11、*
Author Affiliations
  • 1Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
  • 2Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
  • 3Research Center for Advanced Optics and Photoelectronics, Department of Physics, College of Science, Shantou University, Shantou 515063, China
  • 4Key Laboratory of Intelligent Manufacturing Technology of MOE, Shantou University, Shantou 515063, China
  • 5Max-Born-Institut, 12489 Berlin, Germany
  • 6Hefei National Laboratory, Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
  • 7Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology, Center for Advanced Material Diagnostic Technology, and College of Engineering Physics, Shenzhen Technology University, Shenzhen 518118, China
  • 8e-mail: lvhang0811@jlu.edu.cn
  • 9e-mail: shlhu@stu.edu.cn
  • 10e-mail: xuhf@mail.jlu.edu.cn
  • 11e-mail: chenjing@ustc.edu.cn
  • show less
    Figures & Tables(5)
    Rydberg-state excitation process of the N2 molecule and the Ar atom in intense laser fields. The valence electron escapes into the continuum through tunneling and propagates in the laser field. The electrons are captured into a certain Rydberg state coherently and interference occurs, which gives rise to peak structures in the intensity dependence of the RSE. In addition, the interference of the contributions of trajectories captured at positive and negative extrema of the Rydberg wave functions causes the peaks to alternate in heights, as indicated on the right of the figure, such that strong peaks in N2 correspond to weak peaks in Ar and vice versa. This is due to the different parities of the ground states of N2 and Ar (see text for more details).
    Coordinates of the diatomic molecule.
    (a) The measured yields of RSE for Ar and N2 at 800 nm as a function of laser intensity. (b) The calculated yields as a function of laser intensity using the TDSE without focal averaging. (c) The measured (black open squares) and calculated (red filled squares) yield ratios of N2*/Ar* at 800 nm as functions of the laser intensity. In the TDSE simulation, focal averaging is included.
    (a) The excitation probability of the Rydberg states 20<n<30 versus laser intensity calculated via the QM model for Ar and N2 exposed to an 800 nm laser field. (b) The corresponding ratio of N2*/Ar* as a function of the laser intensity.
    (a) Intensity-dependent excitation probability of the Rydberg states n=21 obtained by QM calculations for Ar and N2. (b) and (c) Probability of the Rydberg states n=21 with fixed angular momenta l=17–20 versus laser intensity calculated by QM simulations for Ar and N2, respectively. (d) Radial wave functions of the Rydberg states with n=21, l=17–20, and m=0; (e) integrals of the wave functions depicted in panel (d) over the radius r; (f) integrals of the RSE amplitude [Eq. (5)] over the radius r for the four states shown in panel (d).
    Tools

    Get Citation

    Copy Citation Text

    Yang Liu, Xiaopeng Yi, Qi Chen, Tian Sun, Hang Lv, Shilin Hu, Wilhelm Becker, Haifeng Xu, Jing Chen, "Parity effects in Rydberg-state excitation in intense laser fields," Photonics Res. 12, 3033 (2024)

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Save article for my favorites
    Paper Information

    Category: Ultrafast Optics

    Received: Jul. 5, 2024

    Accepted: Oct. 16, 2024

    Published Online: Dec. 2, 2024

    The Author Email: Hang Lv (lvhang0811@jlu.edu.cn), Shilin Hu (shlhu@stu.edu.cn), Haifeng Xu (xuhf@mail.jlu.edu.cn), Jing Chen (chenjing@ustc.edu.cn)

    DOI:10.1364/PRJ.534973

    CSTR:32188.14.PRJ.534973

    Topics