Competition between coherent emission and broadband spontaneous emission in the quantum free electron laser

Robb, Gordon and Bonifacio, Rodolfo (2013) Competition between coherent emission and broadband spontaneous emission in the quantum free electron laser. Physics of Plasmas, 20 (3). ISSN 1070-664X (https://doi.org/10.1063/1.4794731)

Abstract

We extend previous analyses of spontaneous emission in a quantum free electron laser (QFEL) and competition between spontaneous and coherent QFEL emission to include a broad distribution of photon frequencies and momenta appropriate for spontaneous undulator radiation. We show that although the predictions of monochromatic and broadband models predict different electron momentum distributions for the quantum regime due to spontaneous emission alone after many photon emissions, the inclusion of broadband spontaneous emission has a negligible effect on the competition between spontaneous and coherent emission in the QFEL. Numerical results from both models are well described by the same condition for the threshold/critical value of spontaneous emission rate.

ORCID iDs

Robb, Gordon ORCID: https://orcid.org/0000-0002-3004-5926

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  Item type:	Article
  ID code:	48445
  Dates:	Date Event 1 March 2013 Published
  Subjects:	Science > Physics
  Department:	Faculty of Science > Physics
  Depositing user:	Pure Administrator
  Date deposited:	05 Jun 2014 15:33
  Last modified:	11 Nov 2024 10:43
  Related URLs:	Scopus publication
  URI:	https://strathprints.strath.ac.uk/id/eprint/48445