Femtosecond-Terawatt Hard X Ray Pulse Generation with Chirped Pulse Amplification on a Free Electron Laser

TL;DR

This paper proposes a chirped pulse amplification system for hard x ray free electron lasers, enabling generation of ultra-short, high-power, and high-brightness x ray pulses for advanced physics research.

Contribution

It introduces a novel system design for chirped pulse amplification in hard x ray free electron lasers, supported by numerical modeling with realistic parameters.

Findings

Generation of near-transform-limit single-femtosecond x ray pulses exceeding 1 TW peak power

Achieving brightness over 4×10^{35} s^{-1}mm^{-2}mrad^{-2}0.1% bandwidth

Potential to advance strong field x-ray physics and nonlinear optics

Abstract

Advances of high intensity lasers have opened up the field of strong field physics and led to a broad range of technological applications. Recent x ray laser sources and optics development makes it possible to obtain extremely high intensity and brightness at x ray wavelengths. In this paper, we present a system design that implements chirped pulse amplification for hard x ray free electron lasers. Numerical modeling with realistic experimental parameters show that near-transform-limit single-femtosecond hard x ray laser pulses with peak power exceeding 1 TW and brightness exceeding $4\times10^{35}~$s$^{-1}$mm$^{-2}$mrad$^{-2}$0.1\%bandwdith$^{-1}$ can be consistently generated. Realization of such beam qualities is essential for establishing systematic and quantitative understanding of strong field x-ray physics and nonlinear x ray optics phenomena.