Estimate of Multi-Shot Laser-Induced Polarization for High Energy Electrons

TL;DR

This paper models laser-induced electron polarization using Python, showing how multiple laser shots and laser intensity affect polarization levels, with implications for high-energy electron applications.

Contribution

It introduces a Python-based simulation of the LCFA to analyze multi-shot laser polarization effects on electrons, redefining the quantum efficiency parameter as a function of laser intensity.

Findings

Lower quantum efficiency parameters yield higher polarization but require more shots.

Multiple laser shots increase electron polarization.

Polarization depends on laser intensity and initial conditions.

Abstract

The use of an intense ultrashort laser pulse to induce electron polarization has been proposed in existing literature. The Python programming language is used to recreate the local constant crossed-field approximation (LCFA) with the aim of determining values for transverse polarization given a nonzero initial polarization. It has been shown that over multiple laser shots, lower values of the quantum efficiency parameter are associated with higher transverse polarization output, yet require a greater number of shots to attain maximal polarization. Moreover, the quantum efficiency parameter has been redefined as a function of intensity for a Ti:sapphire laser necessary to induce polarization in the Electron-Ion Collide