Shape effects in nonlinear Thomson and Compton processes

22nd International Laser Physics Workshop

Twardy, M.^1 ; Krajewska, K.^2 ; Kamin´ski, J.Z.^2

Faculty of Electrical Engineering, Warsaw University of Technology, Pl. Politechniki 1, 00-661 Warszawa, Poland^1

Institute of Theoretical Physics, Faculty of Physics, University of Warsaw, Hoza 69, 00-681 Warszawa, Poland^2

关键词: Compton process;    Compton radiation;    Emitted radiation;    Frequency distributions;    Frequency spectra;    Pulse envelopes;    Quantum electrodynamics;    Ultrashort pulse generation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/497/1/012019/pdf
DOI  :  10.1088/1742-6596/497/1/012019

来源: IOP

【 摘 要 】

Spectra of Thomson and Compton radiation, emitted during electron scattering off an intense laser beam, are calculated using the frameworks of classical and strong-field quantum electrodynamics, respectively. Both approaches use a plane-wave-fronted pulse approximation regarding the driving laser beam. Within this approximation, a very good agreement between Thomson and Compton frequency distributions is observed provided that frequencies of the emitted radiation is relatively low. The dependence of frequency spectra on the laser pulse envelope is analysed. This becomes important in the context of ultra-short pulse generation, as illustrated by numerical examples.