Related Experiment Video
Updated: Apr 20, 2026

An Experimental Protocol for Femtosecond NIR/UV - XUV Pump-Probe Experiments with Free-Electron Lasers
Published on: October 23, 2018
Multi-colour pulses from seeded free-electron-lasers: towards the development of non-linear core-level coherent
Filippo Bencivenga1, Flavio Capotondi, Francesco Casolari
1Elettra-Sincrotrone Trieste S.C.p.A., S.S. 14 km 163,5 in AREA Science Park, I-34149, Basovizza, Trieste, Italy. filippo.bencivenga@elettra.eu claudio.masciovecchio@elettra.eu.
Abstract:
We report on new opportunities for ultrafast science thanks to the use of two-colour extreme ultraviolet (XUV) pulses at the FERMI free electron laser (FEL) facility. The two pulses have been employed to carry out a pioneering FEL-pump/FEL-probe diffraction experiment using a Ti target and tuning the FEL pulses to the M(2/3)-edge in order to explore the dependence of the dielectric constant on the excitation fluence. The future impact that the use of such a two-colour FEL emission will have on the development of ultrafast wave-mixing methods in the XUV/soft X-ray range is addressed and discussed.
More Related Videos
Related Concept Videos
NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences
Atomic Spectroscopy: Absorption, Emission, and Fluorescence
Atomic Emission Spectroscopy: Overview
Atomic Emission Spectroscopy: Instrumentation
Photoluminescence: Applications
Fluorescence and Phosphorescence: Instrumentation

