Abstract
Based on the Thomson scattering model of a single high-energy electron interacting with a Gaussian laser pulse, the motion of the electron and the spatial radiation characteristics of the scattered light during the process are simulated with the electron’s varying initial position. The results reveal that the initially stationary electron first oscillates, and then travels in a straight line after interacting with a linearly polarized tightly focused intense laser. As the initial position of the electron moves forward on the z axis, the azimuth angle of the maximum energy radiation direction remains unchanged, while the polar angle gradually decreases and finally stabilizes. It is found that the maximum radiated energy in the whole space is obtained only when the electron is initially set at a specific position and when observed from a certain direction. In the maximum energy radiation direction, both the time and the frequency spectra are further studied qualitatively and quantitatively.
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Data availability
The datasets generated during the current study are available from the corresponding author on reasonable request.
Code availability
Our work is based on MATLAB programming which is in strict obedience to the electrodynamic formulas and theories, codes are available from the corresponding author on reasonable request.
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Acknowledgements
This work has been supported by the National Natural Science Foundation of China under Grant No. 10947170/A05, Natual science fund for colleges and universities in Jiangsu Province under Grant No. 10KJB140006, and Foundation of NJUPT under Grant No. NY2015154, and sponsored by Jiangsu Qing Lan Project.
Funding
This work has been supported by the National Natural Science Foundation of China under Grant No. 10947170/A05, Natual science fund for colleges and universities in Jiangsu Province under Grant No. 10KJB140006, and Foundation of NJUPT under Grant No. NY2015154, and sponsored by Jiangsu Qing Lan Project.
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All authors made contributions to the study conception and design. Analysis, programming and the first draft of the manuscript were performed by YY; XZ collected and summarized the results, and provided detailed suggestions on revision; and YT offered overall guidance as well as corrected possible errors which may lead to misunderstanding. All authors commented on previous versions of the manuscript. All authors read and approved the final manuscript. Figures 2–6 are all generated through MATLAB.
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Yan, Y., Zhou, X. & Tian, Y. Influence of high-energy electron’s initial position on its spatial radiation characteristics during interaction with a linearly polarized tightly focused laser. Opt Quant Electron 54, 865 (2022). https://doi.org/10.1007/s11082-022-04162-0
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DOI: https://doi.org/10.1007/s11082-022-04162-0