Coherence limits of free electron lasers

A. Gover*, E. Dyunin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

The e-beam and radiation wave dynamics in the radiating and nonradiating beam transport sections of free electron lasers (FELs) are analyzed in the collective regime by use of a single transverse mode linear response formulation. This is employed to derive conditions for coherent operation of seeded high-gain FELs. It is shown that the level of incoherent selfamplified spontaneous emission radiation power can be controlled by adjusting the plasma oscillation phase in the nonradiating beam transport sections preceding the FEL, and that at short wavelengths the FEL coherence is limited by energy noise (rather than current shot-noise), and ultimately by quantum noise.

Original languageEnglish
Pages (from-to)1511-1517
Number of pages7
JournalIEEE Journal of Quantum Electronics
Volume46
Issue number11
DOIs
StatePublished - 2010

Funding

FundersFunder number
Ludwig Jokel Fund
Israel Science Foundation

    Keywords

    • Bunched particle beams
    • Electron beams
    • Free electron lasers (FEL)
    • Index Terms-Accelerator beams
    • Particle beam dynamics
    • Shot noise

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