title: Coherent kiloelectronvolt x-rays generated by subcycle optical drivers: a feasibility study.
abstract: We theoretically explored the feasibility of high-harmonic generation in the kiloelectronvolt spectral range by optical waveforms of durations progressively shortened from multicycle to subcycle. Our study revealed that subcycle optical pulses offer a clear advantage in generating isolated x-ray attosecond pulses. In combination with their sub-fs optical drivers these pulses will open the route for x-ray attosecond pump-optical attosecond probe experiments, advancing attosecond streaking and attosecond absorption techniques to new realms of investigation of electronic processes.
authors.forename: A
authors.initials: A
authors.lastname: Moulet
authors.forename: V
authors.initials: V
authors.lastname: Tosa
authors.forename: E
authors.initials: E
authors.lastname: Goulielmakis