title: Experimental setups for FEL-based four-wave mixing experiments at FERMI.
abstract: The recent advent of free-electron laser (FEL) sources is driving the scientific community to extend table-top laser research to shorter wavelengths adding elemental selectivity and chemical state specificity. Both a compact setup (mini-TIMER) and a separate instrument (EIS-TIMER) dedicated to four-wave-mixing (FWM) experiments has been designed and constructed, to be operated as a branch of the Elastic and Inelastic Scattering beamline: EIS. The FWM experiments that are planned at EIS-TIMER are based on the transient grating approach, where two crossed FEL pulses create a controlled modulation of the sample excitations while a third time-delayed pulse is used to monitor the dynamics of the excited state. This manuscript describes such experimental facilities, showing the preliminary results of the commissioning of the EIS-TIMER beamline, and discusses original experimental strategies being developed to study the dynamics of matter at the fs-nm time-length scales. In the near future such experimental tools will allow more sophisticated FEL-based FWM applications, that also include the use of multiple and multi-color FEL pulses.
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Filippo
authors.initials: F
authors.lastname: Bencivenga
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Marco
authors.initials: M
authors.lastname: Zangrando
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Cristian
authors.initials: C
authors.lastname: Svetina
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Alessandro
authors.initials: A
authors.lastname: Abrami
authors.affiliation: PULSE Institute for Ultrafast Energy Science, SLAC, Stanford University, Menlo Park, Stanford, CA 94305, USA.
authors.forename: Andrea
authors.initials: A
authors.lastname: Battistoni
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Roberto
authors.initials: R
authors.lastname: Borghes
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Flavio
authors.initials: F
authors.lastname: Capotondi
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Riccardo
authors.initials: R
authors.lastname: Cucini
authors.affiliation: Physics Department, University of Trento, Trento, Italy.
authors.forename: Francesco
authors.initials: F
authors.lastname: Dallari
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Miltcho
authors.initials: M
authors.lastname: Danailov
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Alexander
authors.initials: A
authors.lastname: Demidovich
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Claudio
authors.initials: C
authors.lastname: Fava
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Giulio
authors.initials: G
authors.lastname: Gaio
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Simone
authors.initials: S
authors.lastname: Gerusina
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Alessandro
authors.initials: A
authors.lastname: Gessini
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Fabio
authors.initials: F
authors.lastname: Giacuzzo
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Riccardo
authors.initials: R
authors.lastname: Gobessi
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Roberto
authors.initials: R
authors.lastname: Godnig
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Riccardo
authors.initials: R
authors.lastname: Grisonich
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Maya
authors.initials: M
authors.lastname: Kiskinova
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Gabor
authors.initials: G
authors.lastname: Kurdi
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Giorgio
authors.initials: G
authors.lastname: Loda
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Marco
authors.initials: M
authors.lastname: Lonza
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Nicola
authors.initials: N
authors.lastname: Mahne
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Michele
authors.initials: M
authors.lastname: Manfredda
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Riccardo
authors.initials: R
authors.lastname: Mincigrucci
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Gianpiero
authors.initials: G
authors.lastname: Pangon
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Pietro
authors.initials: P
authors.lastname: Parisse
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Roberto
authors.initials: R
authors.lastname: Passuello
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Emanuele
authors.initials: E
authors.lastname: Pedersoli
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Lorenzo
authors.initials: L
authors.lastname: Pivetta
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Milan
authors.initials: M
authors.lastname: Prica
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Emiliano
authors.initials: E
authors.lastname: Principi
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Ilaria
authors.initials: I
authors.lastname: Rago
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Lorenzo
authors.initials: L
authors.lastname: Raimondi
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Roberto
authors.initials: R
authors.lastname: Sauro
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Martin
authors.initials: M
authors.lastname: Scarcia
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Paolo
authors.initials: P
authors.lastname: Sigalotti
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Maurizio
authors.initials: M
authors.lastname: Zaccaria
authors.affiliation: ELETTRA-Sincrotrone Trieste SCpA, SS 14, km 163.5 in AREA Science Park, Basovizza, 34149 Trieste, Italy.
authors.forename: Claudio
authors.initials: C
authors.lastname: Masciovecchio
keywords: four-wave-mixing; free-electron lasers; non-linear optics; transient grating