High energy photon production in strong colliding laser beams

TL;DR

This paper investigates how intense colliding laser beams can produce high-energy photons through electron-positron pair recollisions and annihilations, with enhanced probabilities due to the coherent laser field.

Contribution

It introduces a mechanism for high-energy photon production in strong laser fields via recollisions of created pairs, supported by analytical and numerical analysis.

Findings

Recollision of $e^-e^+$ pairs leads to high-energy photon emission.

Coherent laser fields significantly enhance production probability.

Analytical and numerical results confirm the feasibility of this process.

Abstract

The collision of two intense, low-frequency laser beams is considered. The $e^-e^+$ pairs created in this field are shown to exhibit recollisions, which take place at high energy accumulated due to the wiggling of fermions. The resulting $e^-e^+$ annihilation produces high energy photons, or heavy particles. The coherent nature of the laser field provides strong enhancement of the probability of these events. Analytical and numerical results are outlined.