Quantum regime of a free-electron laser: relativistic approach
Quantum regime of a free-electron laser: relativistic approach
Kling, P.; Sauerbrey, R.; Preiss, P.; Giese, E.; Endrich, R.; Schleich, W. P.
Abstract
In the quantum regime of the free-electron laser, the dynamics of the electrons is not governed by continuous trajectories but by discrete jumps in momentum. In this article, we rederive the two crucial conditions to enter this quantum regime: (1) a large quantum mechanical recoil of the electron caused by the scattering with the laser and the wiggler field and (2) a small energy spread of the electron beam. In contrast to our recent approach based on nonrelativistic quantum mechanics in a co-moving frame of reference, we now pursue a model in the laboratory frame employing relativistic quantum electrodynamics.
Keywords: Electrodynamics; Free electron lasers; Quantum electronics; Quantum theory
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Applied Physics B 123(2017)1, 9
DOI: 10.1007/s00340-016-6571-0
Cited 5 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-24811