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Green function approach to the problem of electromagnetic field excitation in THz free electron lasers
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
2012 (English)In: Mathematical Methods in Electromagnetic Theory, 2012, 357-360 p.Conference paper, Published paper (Refereed)
Abstract [en]

The problem of stimulated spontaneous emission in a free electron laser oscillator with planar waveguide and cylindrical mirrors is under consideration. An efficient computational scheme for calculation of the electromagnetic radiation driven by short electron bunches is proposed. Using expansion of the electromagnetic field in a planar waveguide over optical-waveguide modes the inhomogeneous Klein-Gordon equation governing the mode amplitude has been derived. The reflected from mirrors electromagnetic radiation is described in the framework of initial-boundary problem for the homogeneous 1D Klein-Gordon equation. The Green function approach to the Klein-Gordon equation allowed us to obtain an unconditionally stable and computationally efficient numerical scheme describing the self-consistent evolution of electron bunches and electromagnetic fields.

Place, publisher, year, edition, pages
2012. 357-360 p.
Series
International Conference on Mathematical Methods in Electromagnetic Theory, MMET, ISSN 2161-1734
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:uu:diva-193892DOI: 10.1109/MMET.2012.6331165ISBN: 9781467344791 (print)OAI: oai:DiVA.org:uu-193892DiVA: diva2:604909
Conference
14th International Conference on Mathematical Methods in Electromagnetic Theory, MMET 2012, 28 August 2012 through 30 August 2012, Kharkiv
Available from: 2013-02-12 Created: 2013-02-06 Last updated: 2013-02-12Bibliographically approved

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Ziemann, Voker

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