Laser intensity affects the electron's optimal position and the spatial radiation characteristics in linearly polarized tightly focused laser field

Hanchen Qiu; Kaixiang Zhang; Youwei Tian

doi:10.1117/12.2687957

16 October 2023 Laser intensity affects the electron's optimal position and the spatial radiation characteristics in linearly polarized tightly focused laser field

Hanchen Qiu, Kaixiang Zhang, Youwei Tian

Author Affiliations +

Proceedings Volume 12792, Eighteenth National Conference on Laser Technology and Optoelectronics; 1279205 (2023) https://doi.org/10.1117/12.2687957
Event: Eighteenth National Conference on Laser Technology and Optoelectronics, 2023, Shanghai, China

Abstract

Using computer numerical simulation technology, we discuss in detail the influence of linearly polarized tightly focused laser intensity on the maximum radiation power and optimal position of electrons, and further study the dynamics and spatial radiation characteristics of electrons at the optimal position corresponding to different laser intensities.Our results demonstrate that the optimal position and maximum radiation power of the electron exhibit linear and exponential dependencies, respectively, on the laser amplitude.The initially stationary electron at the optimal position undergoes oscillatory motion,and then moves in a straight line after interacting with the laser, with an asymmetric trajectory. As the laser intensity increases, The azimuth angle of the maximum power radiation power remains 0°, while the polar angle decreases from 41° to 25°, indicating that it approaches the z-axis. The time when the maximum radiation power occurs is approximately 50.7 fs. Addictionally, We further discuss the evolution characteristics of the time spectra in the direction of maximum power radiation.

Citation Download Citation

Hanchen Qiu, Kaixiang Zhang, and Youwei Tian "Laser intensity affects the electron's optimal position and the spatial radiation characteristics in linearly polarized tightly focused laser field", Proc. SPIE 12792, Eighteenth National Conference on Laser Technology and Optoelectronics, 1279205 (16 October 2023); https://doi.org/10.1117/12.2687957

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