In this review we summarize our progress in the investigation of fundamental processes of
quantum electrodynamics in laser fields of relativistic power in view of the more recent …

The present work is a report on recent progress made in our understanding of electron–atom
collisions in a laser field. To some extent it is a continuation of a previous review covering a …

We investigate high-order harmonic generation in a solid, modeled as a multilevel system
dressed by a strong infrared laser field. We show that the cutoff energies and the relative …

The interaction of intense ultrashort laser pulses from a chirped pulse amplification titanium
sapphire laser system with dielectric and metallic surfaces was studied. With a p-polarized …

Nanometre-scale metal tips irradiated by femtosecond laser pulses represent ultrafast
electron sources. The combination of the laser pulse and the tip offers the possibility of …

Publisher Summary This chapter provides an overview on various scattering and reaction
processes taking place in a powerful laser field. These processes can be either laser …

Generation of high harmonics by the interaction of intense laser fields with periodic crystal
structures is investigated theoretically. A nonperturbative Floquet-Bloch theory of the …

We present a semiclassical model for plasmon-enhanced high-order harmonic generation
(HHG) in the vicinity of metal nanostructures. We show that, besides the field enhancement …

The electromagnetic response of a free-electron gas leads to the inherent nonlinear optical
behavior of nanostructured plasmonic materials enabled through both strong local field …

High-order harmonic generation (HHG) in solids has entered a new phase of intensive
research, with envisioned band-structure mapping on an ultrashort time scale. This partly …