Start-to-end modelling of a mode-locked optical klystron free electron laser amplifier

D J Dunning; B W J McNeil; N R Thompson; P H Williams

doi:10.1063/1.3605027

Start-to-end modelling of a mode-locked optical klystron free electron laser amplifier

D J Dunning, B W J McNeil, N R Thompson, P H Williams

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Abstract

A free electron laser (FEL) in a mode-locked optical klystron (MLOK) configuration is modelled using start-to-end simulations that simulate realistic electron beam acceleration and transport before input into a full three-dimensional FEL simulation code. These simulations demonstrate that the MLOK scheme is compatible with the present generation of radiofrequency accelerator designs. A train of few-optical cycle pulses is predicted with peak powers similar to those of the equivalent conventional FEL amplifier. The role of electron beam energy modulation in these results is explained and the limitations of some simulation codes discussed. It is shown how seeding the FEL interaction using a High Harmonic seed laser can improve the coherence properties of the output.

Original language	English
Article number	073104
Number of pages	8
Journal	Physics of Plasmas
Volume	18
Issue number	7
Early online date	21 Jul 2011
DOIs	https://doi.org/10.1063/1.3605027
Publication status	Published - 2011

Keywords

free electron laser
short laser pulses
attosecond pulse
mode locking

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10.1063/1.3605027

PoP2011article
Copyright (year) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in PHYSICS OF PLASMAS 18, 073104 (2011) and may be found at http://link.aip.org/link/?php/18/073104 .
Final published version, 1.38 MBLicence: Unspecified

Cite this

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abstract = "A free electron laser (FEL) in a mode-locked optical klystron (MLOK) configuration is modelled using start-to-end simulations that simulate realistic electron beam acceleration and transport before input into a full three-dimensional FEL simulation code. These simulations demonstrate that the MLOK scheme is compatible with the present generation of radiofrequency accelerator designs. A train of few-optical cycle pulses is predicted with peak powers similar to those of the equivalent conventional FEL amplifier. The role of electron beam energy modulation in these results is explained and the limitations of some simulation codes discussed. It is shown how seeding the FEL interaction using a High Harmonic seed laser can improve the coherence properties of the output.",

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Start-to-end modelling of a mode-locked optical klystron free electron laser amplifier

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