Retention of Attosecond Pulse Structure in an HHG Seeded FEL Amplifier
B.W.J. McNeil, N.R. Thompson, D.J. Dunning, B. Sheehy
TL;DR
This paper demonstrates through modeling that the attosecond pulse structure generated by HHG can be preserved in a free-electron laser amplifier, producing high-power attosecond pulses at ~12nm wavelength.
Contribution
It introduces a model showing the retention of attosecond pulse structure in an FEL amplifier seeded by HHG, with predictions of high-power pulses at 12nm.
Findings
Attosecond pulse train of ~300 as width predicted at 12nm
Peak powers exceeding 1 GW achieved in simulations
Methods for enhancing pulse quality discussed
Abstract
A model is presented which demonstrates that the attosecond pulse structure of a High Harmonic Generation (HHG) seed may be retained through to saturation in an FEL amplifier. At wavelengths of ~12nm a train of attosecond pulses of widths ~300 attoseconds with peak powers in excess of 1 GW are predicted from full 3D simulation. Methods for improving these results are discussed.
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Taxonomy
TopicsLaser-Matter Interactions and Applications · Particle Accelerators and Free-Electron Lasers · Laser Design and Applications