Density matrix approach for quantum free-electron lasers

Fares, H. and Robb, G. R.M. and Piovella, N. (2018) Density matrix approach for quantum free-electron lasers. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. ISSN 0168-9002 (https://doi.org/10.1016/j.nima.2018.03.015)

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Abstract

The density matrix in the Lindblad form is used to describe the behavior of the Free-Electron Laser (FEL) operating in a quantum regime. The detrimental effects of the spontaneous emission on coherent FEL operation are taken into account. It is shown that the density matrix formalism provides a simple method to describe the dynamics of electrons and radiation field in the quantum FEL process. In this work, further insights on the key dynamic parameters (e.g., electron populations, bunching factor, radiation power) are presented. We also derive a simple differential equation that describes the evolution of the radiated power in the linear regime. It is confirmed that the essential results of this work agree with those predicted by a discrete Wigner approach at practical conditions for efficient operation of quantum FELs.

  • Item type:Article
    ID code:64266
    Dates:
    Date
    Event
    20 March 2018
    Published
    20 March 2018
    Published Online
    7 March 2018
    Accepted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:05 Jun 2018 14:38
    Last modified:09 Apr 2024 00:04
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/64266
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