Attosecond metrology at Free Electron Lasers

Wednesday, June 10, 2020 - 10:00am

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).

 

Attosecond metrology at Free Electron Lasers
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