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Harmonic lasing in a free-electron-laser amplifier

McNeil, B W J and Robb, G.R.M. and Poole, M.W. and Thompson, N.R. (2006) Harmonic lasing in a free-electron-laser amplifier. Physical Review Letters, 96 (8). 084801-1. ISSN 0031-9007

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Abstract

A method is demonstrated that allows a planar wiggler high-gain Free-Electron-Laser (FEL) amplifier to lase so that the interaction with an odd harmonic of the radiation field dominates that of the fundamental. This harmonic lasing of the FEL is achieved by disrupting the electron interaction with the usually dominant fundamental while allowing that of a harmonic interaction to evolve unhindered. The disruption is achieved by a series of relative phase changes between the electrons and the ponderomotive potentials of both the fundamental and harmonic fields. Such phase changes are relatively easy to implement and some current FEL designs would require little or no structural modification to test the scheme.

Item type: Article
ID code: 2928
Keywords: lasers, amplifier, electrons, free-electron-laser, harmonic lasing, phase changes, Optics. Light
Subjects: Science > Physics > Optics. Light
Department: Faculty of Science > Physics
Related URLs:
    Depositing user: Mr Derek Boyle
    Date Deposited: 20 Feb 2007
    Last modified: 04 Oct 2012 11:58
    URI: http://strathprints.strath.ac.uk/id/eprint/2928

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