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16 October 2023 Full spatial characteristics of emission from electron oscillation driven by linearly polarized laser pulses
Feiyang Gu, Yi Zhang, Haokai Wang, Youwei Tian
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Proceedings Volume 12792, Eighteenth National Conference on Laser Technology and Optoelectronics; 127920J (2023) https://doi.org/10.1117/12.2688537
Event: Eighteenth National Conference on Laser Technology and Optoelectronics, 2023, Shanghai, China
Abstract
Based on the classical Thomson scattering theory, a model for the interaction of a single electron with a linearly polarized laser pulse is constructed and numerically simulated to investigate the relativistic motion as well as the full-space characteristics of the electron radiation, which is driven by a linearly polarized femtosecond laser pulse theoretically and numerically. In the process of the study, it is found that the radiation’s full spatial distribution indicates different characteristics at different intensities. At low laser intensities, the radiation spatial spectrum is the same as that of a dipole antenna. As the laser intensity increases, the spatial spectrum changes from fourfold rotational symmetry to twofold rotational symmetry, and the radiation direction becomes more and more inclined to the Z-axis, i.e., the collimation becomes better. These phenomena are mainly influenced by the electron dynamics and the nature of the linearly polarized femtosecond laser pulses. In addition, as the laser pulse intensity increases, the maximum radiation angle decreases and the maximum radiation power increases. The above-mentioned laws allow us to measure the intensity of the experimentally linearly polarized laser pulses in reverse, based on the observed radiation properties.
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Feiyang Gu, Yi Zhang, Haokai Wang, and Youwei Tian "Full spatial characteristics of emission from electron oscillation driven by linearly polarized laser pulses", Proc. SPIE 12792, Eighteenth National Conference on Laser Technology and Optoelectronics, 127920J (16 October 2023); https://doi.org/10.1117/12.2688537
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KEYWORDS
Laser radiation
Pulsed laser operation
Femtosecond phenomena
Laser scattering
Particles
Thomson scattering
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