Widely tunable two-colour seeded free-electron laser source for resonant-pump resonant-probe magnetic scattering
Articolo
Data di Pubblicazione:
2016
Citazione:
Widely tunable two-colour seeded free-electron laser source for resonant-pump resonant-probe magnetic scattering / E. Ferrari, C. Spezzani, F. Fortuna, R. Delaunay, F. Vidal, I. Nikolov, P. Cinquegrana, B. Diviacco, D. Gauthier, G. Penco, P.R. Ribič, E. Roussel, M. Trovò, J. Moussy, T. Pincelli, L. Lounis, M. Manfredda, E. Pedersoli, F. Capotondi, C. Svetina, N. Mahne, M. Zangrando, L. Raimondi, A. Demidovich, L. Giannessi, G. De Ninno, M.B. Danailov, E. Allaria, M. Sacchi. - In: NATURE COMMUNICATIONS. - ISSN 2041-1723. - 7(2016 Jan 13). [10.1038/ncomms10343]
Abstract:
The advent of free-electron laser (FEL) sources delivering two synchronized pulses of different wavelengths (or colours) has made available a whole range of novel pump–probe experiments. This communication describes a major step forward using a new configuration of the FERMI FEL-seeded source to deliver two pulses with different wavelengths, each tunable independently over a broad spectral range with adjustable time delay. The FEL scheme makes use of two seed laser beams of different wavelengths and of a split radiator section to generate two extreme ultraviolet pulses from distinct portions of the same electron bunch. The tunability range of this new two-colour source meets the requirements of double-resonant FEL pump/FEL probe time-resolved studies. We demonstrate its performance in a proof-of-principle magnetic scattering experiment in Fe–Ni compounds, by tuning the FEL wavelengths to the Fe and Ni 3p resonances.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
E. Ferrari, C. Spezzani, F. Fortuna, R. Delaunay, F. Vidal, I. Nikolov, P. Cinquegrana, B. Diviacco, D. Gauthier, G. Penco, P.R. Ribič, E. Roussel, M. Trovò, J. Moussy, T. Pincelli, L. Lounis, M. Manfredda, E. Pedersoli, F. Capotondi, C. Svetina, N. Mahne, M. Zangrando, L. Raimondi, A. Demidovich, L. Giannessi, G. De Ninno, M.B. Danailov, E. Allaria, M. Sacchi
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