Single-shot spectro-temporal characterization of XUV pulses from a seeded free-electron laser.

Abstract:

:Intense ultrashort X-ray pulses produced by modern free-electron lasers (FELs) allow one to probe biological systems, inorganic materials and molecular reaction dynamics with nanoscale spatial and femtoscale temporal resolution. These experiments require the knowledge, and possibly the control, of the spectro-temporal content of individual pulses. FELs relying on seeding have the potential to produce spatially and temporally fully coherent pulses. Here we propose and implement an interferometric method, which allows us to carry out the first complete single-shot spectro-temporal characterization of the pulses, generated by an FEL in the extreme ultraviolet spectral range. Moreover, we provide the first direct evidence of the temporal coherence of a seeded FEL working in the extreme ultraviolet spectral range and show the way to control the light generation process to produce Fourier-limited pulses. Experiments are carried out at the FERMI FEL in Trieste.

journal_name

Nat Commun

journal_title

Nature communications

authors

De Ninno G,Gauthier D,Mahieu B,Ribič PR,Allaria E,Cinquegrana P,Danailov MB,Demidovich A,Ferrari E,Giannessi L,Penco G,Sigalotti P,Stupar M

doi

10.1038/ncomms9075

subject

Has Abstract

pub_date

2015-08-20 00:00:00

pages

8075

issn

2041-1723

pii

ncomms9075

journal_volume

6

pub_type

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