A wide bandwidth free-electron laser with mode locking using current modulation

E Kur, D J Dunning, B W J McNeil, J Wurtele, A A Zholents

Research output: Contribution to journalArticle

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Abstract

A new scheme for mode locking a free-electron laser (FEL) amplifier is proposed based on electron beam current modulation. It is found that certain properties of the original concept (Thompson and McNeil 2008 Phys. Rev. Lett. 100 203901), based on the energy modulation of electrons, are improved, including the spectral brightness of the source and the purity of the series of short pulses. Numerical comparisons are made between the new and old schemes and between a mode-locked FEL and a self-amplified spontaneous emission FEL. Illustrative examples using a hypothetical mode-locked FEL amplifier are provided. The ability to generate intense coherent radiation with a large bandwidth is demonstrated.
Original languageEnglish
Article number063012
Number of pages18
JournalNew Journal of Physics
Volume13
DOIs
Publication statusPublished - 8 Jun 2011

Fingerprint

free electron lasers
locking
bandwidth
modulation
amplifiers
coherent radiation
beam currents
spontaneous emission
brightness
purity
electron beams
pulses
electrons
energy

Keywords

  • optics
  • accelerators
  • beams
  • quantum optics
  • lasers
  • electromagnetism

Cite this

Kur, E ; Dunning, D J ; McNeil, B W J ; Wurtele, J ; Zholents, A A . / A wide bandwidth free-electron laser with mode locking using current modulation. In: New Journal of Physics. 2011 ; Vol. 13.
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abstract = "A new scheme for mode locking a free-electron laser (FEL) amplifier is proposed based on electron beam current modulation. It is found that certain properties of the original concept (Thompson and McNeil 2008 Phys. Rev. Lett. 100 203901), based on the energy modulation of electrons, are improved, including the spectral brightness of the source and the purity of the series of short pulses. Numerical comparisons are made between the new and old schemes and between a mode-locked FEL and a self-amplified spontaneous emission FEL. Illustrative examples using a hypothetical mode-locked FEL amplifier are provided. The ability to generate intense coherent radiation with a large bandwidth is demonstrated.",
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A wide bandwidth free-electron laser with mode locking using current modulation. / Kur, E; Dunning, D J; McNeil, B W J; Wurtele, J; Zholents, A A .

In: New Journal of Physics, Vol. 13, 063012, 08.06.2011.

Research output: Contribution to journalArticle

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AB - A new scheme for mode locking a free-electron laser (FEL) amplifier is proposed based on electron beam current modulation. It is found that certain properties of the original concept (Thompson and McNeil 2008 Phys. Rev. Lett. 100 203901), based on the energy modulation of electrons, are improved, including the spectral brightness of the source and the purity of the series of short pulses. Numerical comparisons are made between the new and old schemes and between a mode-locked FEL and a self-amplified spontaneous emission FEL. Illustrative examples using a hypothetical mode-locked FEL amplifier are provided. The ability to generate intense coherent radiation with a large bandwidth is demonstrated.

KW - optics

KW - accelerators

KW - beams

KW - quantum optics

KW - lasers

KW - electromagnetism

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