Amplified short-wavelength light scattered by relativistic electrons in the laser-induced optical lattice

TL;DR

This paper analyzes a scheme for an XUV/X-ray free electron laser using an optical undulator formed by two laser beams, incorporating kinetic theory and numerical modeling to account for electron beam properties.

Contribution

It introduces a kinetic theoretical framework and numerical models to evaluate the performance of an optical undulator-based free electron laser.

Findings

Theoretical analysis of electron beam interactions in the optical lattice.

Numerical simulations validating the theoretical predictions.

Insights into spectral properties and electron beam effects.

Abstract

The scheme of the XUV/X-ray free electron laser based on the optical undulator created by two overlapped transverse laser beams is analyzed. A kinetic theoretical description and an ad hoc numerical model are developed to account for the finite energy spread, angular divergence and the spectral properties of the electron beam in the optical lattice. The theoretical findings are compared to the results of the one- and three-dimensional numerical modeling with the spectral free electron laser code PLARES.