Ferenc Krausz

TL;DR: Two different types of high-dispersive mirrors (HDM) are reported on, one of which provides a record value for the group delay dispersion (GDD) of -4000 fs2 and covers the wavelength range of 1027-1033 nm, whereas the other one provides -3000 fs2 over the wavelengthrange of 1020-1040 nm.

TL;DR: In this paper, nonlinear light-matter interactions in the extreme ultraviolet (XUV) are a prerequisite to perform XUV-pump/XUV-probe spectroscopy of core electrons.

TL;DR: In this paper, the authors demonstrate kHz-repetition-rate guided-wave high-harmonic generation in helium down to the 10-nm range with high field interactions with plane-wave excitation at intensity levels in excess of 1015 W/cm2 under well-controlled conditions.

TL;DR: In this article, high-order harmonic generation from solid surfaces in the coherent wake emission regime with relativistically intense few-cycle (8 fs) laser pulses was investigated and significant spectral broadening compared to previous experiments with many-cycle pulses and the appearance of substructures on the harmonics are observed that strongly fluctuate from shot to shot.

TL;DR: A combination of single-shot detection and a fast actuator that is capable of measuring and correcting the CEP in every single shot emitted by a millijoule-scale, multi-kHz femtosecond laser amplifier to represent a twofold improvement of theCEP stability over previously published results in comparable systems.