Stephan M. Teichmann

TL;DR: The exploitation of a transient phase matching regime is experimentally demonstrated to generate carrier envelope controlled soft X-ray supercontinua with pulse energies up to 2.9±0.1 pJ and a flux of (7.3±1.1) × 107 photons per second across the entire water window.

TL;DR: This work demonstrates experimentally the isolation of individual attosecond pulses at the carbon K-shell edge in the soft X-ray water window with pulse duration below 400 as and with a bandwidth supporting a 30-as pulse duration.

TL;DR: This source is used to demonstrate table-top x-ray near-edge fine-structure spectroscopy at the carbon K-edge of a polyimide foil and retrieve the specific absorption features corresponding to the binding orbitals of the carbon atoms in the foil.

TL;DR: In this article, the instantaneous response of graphene to ultrafast optical fields is investigated, elucidating the role of hot carriers on sub-100-fs timescales, and an intuitive picture is given for the carrier trajectories in response to the optical-field polarization state, which may also apply to surface states in topological insulators with similar Dirac cone dispersion relations.

TL;DR: In this article, the first attosecond pulses in the soft x-ray portion of the spectrum were generated and for the first time characterized in the presence of a single electron.