Exploring the multiparameter nature of EUV-visible wave mixing at the FERMI FEL

L. Foglia, F. Capotondi, H. Höppner, A. Gessini, L. Giannessi, G. Kurdi, I. Lopez Quintas, C. Masciovecchio, M. Kiskinova, R. Mincigrucci, D. Naumenko, I. P. Nikolov, E. Pedersoli, G. M. Rossi, A. Simoncig, F. Bencivenga

Research output: Contribution to journalReview articlepeer-review


The rapid development of extreme ultraviolet (EUV) and x-ray ultrafast coherent light sources such as free electron lasers (FELs) has triggered the extension of wave-mixing techniques to short wavelengths. This class of experiments, based on the interaction of matter with multiple light pulses through the Nth order susceptibility, holds the promise of combining intrinsic ultrafast time resolution and background-free signal detection with nanometer spatial resolution and chemical specificity. A successful approach in this direction has been the combination of the unique characteristics of the seeded FEL FERMI with dedicated four-wave-mixing (FWM) setups, which leads to the demonstration of EUV-based transient grating (TG) spectroscopy. In this perspective paper, we discuss how the TG approach can be extended toward more general FWM spectroscopies by exploring the intrinsic multiparameter nature of nonlinear processes, which derives from the ability of controlling the properties of each field independently.

Original languageEnglish
Article number040901
JournalStructural Dynamics
Issue number4
Publication statusPublished - 1 Jul 2019
Externally publishedYes

ASJC Scopus subject areas

  • Radiation
  • Instrumentation
  • Condensed Matter Physics
  • Spectroscopy

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