X-ray amplification from a Raman Free Electron Laser
Plasma Physics
2015-06-12 v1
Abstract
We demonstrate that a mm-scale free electron laser can operate in the X-ray range, in the interaction between a moderately relativistic electron bunch, and a transverse high intensity optical lattice. The corrugated light-induced ponderomotive potential acts simultaneously as a guide and as a low-frequency wiggler, triggering stimulated Raman scattering. The gain law in the small signal regime is derived in a fluid approach, and confirmed from Particle-In-Cell simulations. We describe the nature of bunching, and discuss the saturation properties. The resulting all-optical Raman X-ray laser opens perspectives for ultra-compact coherent light sources up to the hard X-ray range.
Cite
@article{arxiv.1211.1464,
title = {X-ray amplification from a Raman Free Electron Laser},
author = {Igor Andriyash and Emmanuel D'Humieres and Vladimir Tikhonchuk and Philippe Balcou},
journal= {arXiv preprint arXiv:1211.1464},
year = {2015}
}
Comments
accepted for publication in Phys. Rev. Lett. 03/11/2012