Journal of Optoelectronics · Laser, Volume. 35, Issue 10, 1066(2024)

Time evolution properties of electron motion and radiation in tightly focused laser pulses

JI Miao1, XU Yifan1, HU Fanghui1, and TIAN Youwei2
Author Affiliations
  • 1Bell Honors School, Nanjing University of Posts and Telecommunications, Nanjing, Jiangsu 210046, China
  • 2School of Science, Nanjing University of Posts and Telecommunications, Nanjing, Jiangsu 210046, China
  • show less

    In this study, the radiation characteristics of nonlinear Thomson scattering were investigated using the Lagrange-Gaussian model. Through analysis and experiments, we obtained the spatial motion trajectories of individual electrons and generated three-dimensional radiation data within the laser field. The results indicate that, under the conditions of a fixed operating wavelength, waist radius, and pulse width, electrons within a tightly focused linearly polarized laser field exhibit oscillatory motion in the x-z plane, forming a "zigzag" pattern, with the maximum displacement along the x-axis. Additionally, for the first time, we employed a time-resolved observation method to observe the three-dimensional radiation changes resulting from the interaction between the laser and electrons. We found that the normalized radiation energy exhibits different growth rates as the normalized time increases. Furthermore, within the laser field, the angles Φ and θ of the normalized peak energy are not fixed; only when the normalized peak energy tends towards its maximum value of 1.45 hundred million, the observation angles become fixed. These results are of significant importance for understanding nonlinear Thomson scattering and advancing research on X/γ-ray generation in optical laboratories.

    Tools

    Get Citation

    Copy Citation Text

    JI Miao, XU Yifan, HU Fanghui, TIAN Youwei. Time evolution properties of electron motion and radiation in tightly focused laser pulses[J]. Journal of Optoelectronics · Laser, 2024, 35(10): 1066

    Download Citation

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

    Category:

    Received: Mar. 12, 2023

    Accepted: Dec. 31, 2024

    Published Online: Dec. 31, 2024

    The Author Email:

    DOI:10.16136/j.joel.2024.10.0092

    Topics