First-order strong-field QED processes in a tightly focused laser beam

Abstract

In [Phys. Rev. Lett. \textbf{117}, 213201 (2016)] we have determined the angular resolved and the total energy spectrum of a positron produced via nonlinear Breit-Wheeler pair production by a high-energy photon counterpropagating with respect to a tightly focused laser beam. Here, we first generalize the results in [Phys. Rev. Lett. \textbf{117}, 213201 (2016)] by including the possibility that the incoming photon is not exactly counterpropagating with respect to the laser field. As main focus of the present paper, we determine the photon angular resolved and total energy spectrum for the related process of nonlinear Compton scattering by an electron impinging into a tightly-focused laser beam. Analytical integral expressions are obtained under the realistic assumption that the energy of the incoming electron is the largest dynamical energy of the problem and that the electron is initially almost counterpropagating with respect to the laser field. The crossing symmetry relation between the two processes in a tightly focused laser beam is also elucidated.

24 pages, no figures

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• Nonlinear Compton scattering in ultra-short laser pulses
• Non-Linear Compton Scattering of Ultrashort and Ultraintense Laser Pulses
• Trident pair production in strong laser pulses
• Compton Process in Intense Short Laser Pulses
• Nonlinear double Compton scattering in the full quantum regime
• Testing numerical implementations of strong field electrodynamics
• Nonlinear Breit-Wheeler pair production in a tightly focused laser beam
• Analytical tools for investigating strong-field QED processes in tightly focused laser fields
• Classical and quantum particle dynamics in univariate background fields
• Focussing effects in laser-electron Thomson scattering
• Classical and quantum dynamics of a charged scalar particle in a background of two counterpropagating plane waves

Cited by in corpus (6)

• Scaling laws for positron production in laser--electron-beam collisions
• Fully polarized nonlinear Breit-Wheeler pair production in pulsed plane waves
• Numerical approach to the semiclassical method of radiation emission for arbitrary electron spin and photon polarization
• The electron mass shift in an intense plane wave
• Optimal photon polarization toward the observation of the nonlinear Breit-Wheeler pair production
• Ultrarelativistic electrons in counterpropagating laser beams