Mode-Locking in a Free-Electron Laser Amplifier
Optics
2008-11-26 v2 Accelerator Physics
Abstract
A technique is proposed to generate attosecond pulse trains of radiation from a Free-Electron Laser amplifier. The optics-free technique synthesises a comb of longitudinal modes by applying a series of spatio-temporal shifts between the co-propagating radiation and electron bunch in the FEL. The modes may be phase-locked by modulating the electron beam energy at the mode spacing frequency. Three-dimensional simulations demonstrate the generation of a train of 400as pulses at giga-watt power levels evenly spaced by 2.5fs at a wavelength of 124 Angstrom. In the X-ray at wavelength 1.5 Angstrom, trains of 23as pulses evenly spaced by 150as and of peak power up to 6GW are predicted.
Cite
@article{arxiv.0802.4159,
title = {Mode-Locking in a Free-Electron Laser Amplifier},
author = {N. R. Thompson and B. W. J. McNeil},
journal= {arXiv preprint arXiv:0802.4159},
year = {2008}
}
Comments
Accepted for publication in Physical Review Letters