Widely Tunable Two-colour Seeded Free-electron Laser Source for Resonant-pump Resonant-probe Magnetic Scattering

Overview

Journal Nat Commun

Specialty Biology

Date 2016 Jan 14

PMID 26757813

Citations 14

Authors

Eugenio Ferrari

Carlo Spezzani

Franck Fortuna

Renaud Delaunay

Franck Vidal

Ivaylo Nikolov

Paolo Cinquegrana

Bruno Diviacco

David Gauthier

Giuseppe Penco

Primoz Rebernik Ribic

Eleonore Roussel

Marco Trovo

Jean-Baptiste Moussy

Tommaso Pincelli

Lounes Lounis

Michele Manfredda

Emanuele Pedersoli

Flavio Capotondi

Cristian Svetina

Nicola Mahne

Marco Zangrando

Lorenzo Raimondi

Alexander Demidovich

Luca Giannessi

Giovanni De Ninno

Miltcho Boyanov Danailov

Enrico Allaria

Maurizio Sacchi

Affiliations

Soon will be listed here.

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.

Citing Articles

Seeded stimulated X-ray emission at 5.9 keV.

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Multicolor x-rays from free electron-driven van der Waals heterostructures.

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Generation of time-synchronized two-color X-ray free-electron laser pulses using phase shifters.

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Tunable x-ray free electron laser multi-pulses with nanosecond separation.

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