Emission and its back-reaction accompanying electron motion in relativistically strong and QED-strong pulsed laser fields

TL;DR

This paper analyzes electron emission in ultra-strong laser fields, incorporating QED effects, and derives the radiation force from QED principles, extending understanding of electron dynamics in extreme laser environments.

Contribution

It introduces a QED-based derivation of the radiation force on electrons in relativistically strong laser fields, extending the applicability to QED-strong regimes.

Findings

QED effects modify electron emission at high intensities

Radiation force derived from QED principles

Applicability range extended to QED-strong fields

Abstract

The emission from an electron in the field of a relativistically strong laser pulse is analyzed. At pulse intensities of J > 2 10^22 W/cm2 the emission from counter-propagating electrons is modified by the effects of Quantum ElectroDynamics (QED), as long as the electron energy is sufficiently high: E > 1 GeV. The radiation force experienced by an electron is for the first time derived from the QED principles and its applicability range is extended towards the QED-strong fields.