The response of a medium illuminated with a light field can be expanded in many orders in perturbative non-linear optics. Here we use two multiple-cycle high-intensity laser pulses at 800 and 1,400 nm to generate extreme ultraviolet radiation where the multi-photon processes can be treated as the driving force of a perturbative optical parametric amplification. When a very high-intensity pulse ...

patients and methods we evaluated radiation exposure from initial and downstream testing in a prospectively collected, matched cohort evaluated for cp in the emergency department (ed) with either ccta compared with usual care over a median follow-up of 19.6 months. effective radiation dose was calculated using published conversion factors. results prospective, ecg-triggered acquisition using a ...

Interaction of an electron with the counter-propagating electromagnetic wave is studied theoretically and particle-in-cell simulations in regime quantum radiation reaction. We find energy center laser pulse, as it a key factor for testing non-linear electrodynamics vacuum properties laser-electron collision multi-photon Compton scattering Cherenkov radiation. With multiparametric analysis we pr...