Radiation spectrum characteristics of circularly polarized laser colliding electrons at different intensities

ZuJie Chen; Xin Shen; Youwei Tian

doi:10.1117/12.2600883

31 August 2021 Radiation spectrum characteristics of circularly polarized laser colliding electrons at different intensities

ZuJie Chen, Xin Shen, Youwei Tian

Author Affiliations +

Proceedings Volume 11907, Sixteenth National Conference on Laser Technology and Optoelectronics; 119070A (2021) https://doi.org/10.1117/12.2600883
Event: Sixteenth National Conference on Laser Technology and Optoelectronics, 2021, Shanghai, China

Abstract

Within the framework of nonlinear Thomson scattering, the spectral properties of the electromagnetic radiation emitted by a tightly focused circularly polarized laser pulse acting on relatively moving electrons at different intensities are studied in detail, starting from a single-electron collision model. Through theoretical analysis and computer simulations, we investigate that the spectrum on θ = 180°has good quasi-monochromaticity for a₀>1. While in the 0 case of a₀>1, multiple discrete bandwidths appear in the θ = 170° as well as θ = 190° directions, and the quasi- 0 monochromaticity of the radiation spectrum is always better than that of θ = 180° with asymmetry. In addition, it is found that the laser intensity is positively correlated with the bandwidth of the radiation spectrum on θ = 180° and negatively correlated with the peak of the spectrum at the same angle. And as the laser intensity increases, the radiation energy expands in the direction of decreasing angle θ , and the radiation spectrum gradually broadens to high frequency at the maximum peak power angle θ_m .

Citation Download Citation

ZuJie Chen, Xin Shen, and Youwei Tian "Radiation spectrum characteristics of circularly polarized laser colliding electrons at different intensities", Proc. SPIE 11907, Sixteenth National Conference on Laser Technology and Optoelectronics, 119070A (31 August 2021); https://doi.org/10.1117/12.2600883

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