The quest for ever‐shorter optical pulses has been ongoing for over half a century. Although
few‐cycle pulses have been generated for nearly 40 years, pulse lengths below the single …

The sub-cycle interaction of light and matter is one of the key frontiers of inquiry made
accessible by attosecond science. Here, we show that when light excites a pair of charge …

The dispersion scan (d-scan) technique has emerged as a simple-to-implement
characterization method for ultrashort laser pulses. D-scan traces are intuitive to interpret …

We present a high peak and average power optical parametric chirped pulse amplification
system driven by diode-pumped Yb: KGW and Nd: YAG lasers running at 1 kHz repetition …

Carrier–envelope phase stable 4 fs near-IR pulses with 3 mJ energy were generated by
spectral broadening of circularly polarized 8 mJ pulses in a differentially pumped 2 m long …

We employ few-femtosecond extreme ultraviolet (XUV) transient absorption spectroscopy to
reveal simultaneously the intra-and interband carrier relaxation and the light-induced …

Femtosecond laser pulses lasting only a few optical periods hold the potential for probing
and manipulating the electronic degrees of freedom within matter. However, the generation …

High-contrast, intense single-cycle pulses are highly desirable tools in ultrafast science,
enabling highest temporal resolution, pushing matter to extreme conditions, and serving as …

We present a table-top beamline providing a soft X-ray supercontinuum extending up to 370
eV from high-order harmonic generation with sub-13 fs 1300 nm driving pulses and …

Extreme ultraviolet (XUV) transient reflectivity around the germanium M 4, 5 edge (3 d core-
level to valence transition) at 30 eV is advanced to obtain the transient dielectric function of …