Speaker: Giuseppe Sansone, Physikalisches Institut, Albert-Ludwigs-Universität
Program Description:
Recently the generation of trains [1] and isolated [2] attosecond pulses has been demonstrated at Free Electron Lasers (FELs) operating in the extreme ultraviolet (XUV) and soft X-ray spectral range.
FEL-driven attosecond sources present important advantages with respect to table-top attosecond sources based on high-order harmonic generation, including high-energies per pulse (typically in the microjoule-millijoule range), tunability of the photon energy and shaping capability (in the case of train of attosecond pulses). In this talk I will show the experimental technique introduced for the temporal characterization of attosecond pulses at FERMI [3].
[1] P. K. Maroju et al. Attosecond pulse shaping using a seeded free-electron Laser, Nature 578,386-391 (2020).
[2] J. Duris et al. Tunable isolated attosecond X-ray pulses with gigawatt peak power from a free-electron laser, Nature Photon. 14,30-36 (2020).
[3] E. Allaria et al. Highly coherent and stable pulses from the FERMI seeded free-electron laser in the extreme ultraviolet, Nature Photon. 6, 699-704(2012).
