Upcoming and planned experiments combining increasingly intense lasers and energetic
particle beams will access new regimes of nonlinear, relativistic, quantum effects. This …

The dynamics of charged particles in electromagnetic fields is an essential component of
understanding the most extreme environments in our Universe. In electromagnetic fields of …

The production of a highly polarized positron beam via nonlinear Breit-Wheeler processes
during the interaction of an ultraintense circularly polarized laser pulse with a longitudinally …

Accurate modeling is necessary to support precision experiments investigating strong-field
QED phenomena. This modeling is particularly challenging in the transition between the …

We investigate the phenomenology of nonlinear Compton scattering of polarized photons by
unpolarized electrons in plane-wave backgrounds. The energy and angular spectra of …

The advent of high-power ultra-short laser pulses opens up new frontiers of relativistic non-
linear optics, high energy density physics and laboratory astrophysics. As the laser electric …

In a previous paper we showed how higher-order strong-field-QED processes in long laser
pulses can be approximated by multiplying sequences of'strong-field Mueller matrices'. We …

Many works have shown that dense positrons can be effectively generated from laser-solid
interactions in the strong-field quantum electrodynamics (QED) regime. Whether these …

We put forward a novel method for producing ultrarelativistic high-density high-polarization
positrons through a single-shot interaction of a strong laser with a tilted solid foil. In our …

In this paper we derive and discuss the completely spin-and photon-polarization-dependent
probability rates for nonlinear Compton scattering and nonlinear Breit-Wheeler pair …