Abstract
In this paper, a model of electron electromagnetic radiation is established using Lorentz formula for the interaction of a tightly focused elliptically polarized laser with a single electron under the condition of nonlinear Thomson scattering. Let the initial pulse width \({\kern 1pt} \lambda_{0} {\kern 1pt}\) be 3.3 fs. By changing the laser pulse width \(L\), the energy distribution and space distribution of electron radiation emitted by electron under different conditions are obtained. The results show that when laser interacts with a single electron, the electromagnetic radiation emitted by the electron accumulates in a cone shape in space. With the increase of pulse width \({\kern 1pt} L\), the peak energy of electron radiation is bimodal, and the peak power of electron radiation drops. At the same time, the longer it takes for the electron radiation to reach the peak, the frequency spectrum and time function show that the high-frequency component decreases, the cutoff frequency decreases, and the harmonic frequency increases.
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Acknowledgements
This work has been supported by the National Natural Sciences Foundation of China under Grant No. 10947170/A05 and No. 11104291, Natural science fund for colleges and universities in Jiangsu Province under Grant No. 10KJB140006, Natural Sciences Foundation of Shanghai under Grant No. 11ZR1441300 and Natural Science Foundation of Nanjing University of Posts and Telecommunications under Grant No. NY221098 and sponsored by Jiangsu Qing Lan Project and STITP Project under Grant No. CXXYB2022520.
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Zhang Xiang and Chen dongjun wrote the main manuscript text and prepared figures 1-7. All authors reviewed the manuscript.
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Zhang, X., Chen, D. & Tian, Y. Analysis of the pulse widths on radiation properties from an electron driven by intense elliptically polarized laser. Appl. Phys. B 129, 135 (2023). https://doi.org/10.1007/s00340-023-08066-z
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DOI: https://doi.org/10.1007/s00340-023-08066-z