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  1. No Access

    Article

    Attosecond coherent control of electronic wave packets in two-colour photoionization using a novel timing tool for seeded free-electron laser

    In ultrafast spectroscopy, the temporal resolution of time-resolved experiments depends on the duration of the pump and probe pulses, and on the control and characterization of their relative synchronization. ...

    Praveen Kumar Maroju, Michele Di Fraia, Oksana Plekan, Matteo Bonanomi… in Nature Photonics (2023)

  2. No Access

    Article

    Generation and measurement of intense few-femtosecond superradiant extreme-ultraviolet free-electron laser pulses

    Free-electron lasers producing ultrashort pulses with high peak power promise to extend ultrafast non-linear spectroscopic techniques into the extreme-ultraviolet–X-ray regime. Key aspects are the synchronizat...

    Najmeh S. Mirian, Michele Di Fraia, Simone Spampinati… in Nature Photonics (2021)

  3. No Access

    Article

    Photoelectric effect with a twist

    Photons have fixed spin and unbounded orbital angular momentum (OAM). While the former is manifested in the polarization of light, the latter corresponds to the spatial phase distribution of its wavefront1. The d...

    Giovanni De Ninno, Jonas Wätzel, Primož Rebernik Ribič, Enrico Allaria… in Nature Photonics (2020)

  4. No Access

    Article

    Coherent soft X-ray pulses from an echo-enabled harmonic generation free-electron laser

    X-ray free-electron lasers (FELs), which amplify light emitted by a relativistic electron beam, are extending nonlinear optical techniques to shorter wavelengths, adding element specificity by exciting and pro...

    Primož Rebernik Ribič, Alessandro Abrami, Laura Badano, Maurizio Bossi… in Nature Photonics (2019)