Raphael Tautz

TL;DR: In this article, the authors demonstrate a laser wakefield accelerator with a novel electron injection scheme resulting in enhanced stability, reproducibility, and ease of use, which can be easily adapted to different laser parameters and should therefore allow scaling to the energy range of several hundred MeV.

TL;DR: A two-stage noncollinear optical parametric chirped-pulse amplification system that generates 7.9 fs pulses containing 130 mJ of energy at an 805 nm central wavelength and 10 Hz repetition rate allows for experiments in a regime of relativistic light-matter interactions and attosecond science.

TL;DR: An electron accelerator based on few-cycle (8 fs full width at half maximum) laser pulses, with only 40 mJ energy per pulse, which constitutes a previously unexplored parameter range in laser-driven electron acceleration.

TL;DR: In this article, two-color pumping of independent stages is used to sequentially amplify the long and short wavelength parts of the ultrabroadband seed pulses, which should allow the compression to the Fourier limit of below 5 fs in the high energy system.

TL;DR: It is theoretically shown that the accumulated OPA phase partially compensates for wave-vector mismatch and leads to extended broadband amplification and the experimental outcome is supported by numerical split-step simulations of the parametric signal gain, including pump depletion and parametric fluorescence.