title: Mapping the transverse coherence of the self amplified spontaneous emission of a free-electron laser with the heterodyne speckle method.
abstract: The two-dimensional single shot transverse coherence of the Self-Amplified Spontaneous Emission of the SPARC_LAB Free-Electron Laser was measured through the statistical analysis of a speckle field produced by heterodyning the radiation beam with a huge number of reference waves, scattered by a suspension of particles. In this paper we report the measurements and the evaluation of the transverse coherence along the SPARC_LAB undulator modules. The measure method was demonstrated to be precise and robust, it does not require any a priori assumptions and can be implemented over a wide range of wavelengths, from the optical radiation to the x-rays.
authors.forename: Matteo D
authors.initials: MD
authors.lastname: Alaimo
authors.forename: Maria Pia
authors.initials: MP
authors.lastname: Anania
authors.forename: Marcello
authors.initials: M
authors.lastname: Artioli
authors.forename: Alberto
authors.initials: A
authors.lastname: Bacci
authors.forename: Marco
authors.initials: M
authors.lastname: Bellaveglia
authors.forename: Franco
authors.initials: F
authors.lastname: Ciocci
authors.forename: Enrica
authors.initials: E
authors.lastname: Chiadroni
authors.forename: Alessandro
authors.initials: A
authors.lastname: Cianchi
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Dattoli
authors.forename: Giampierro
authors.initials: G
authors.lastname: Di Pirro
authors.forename: Massimo
authors.initials: M
authors.lastname: Ferrario
authors.forename: Giancarlo
authors.initials: G
authors.lastname: Gatti
authors.forename: Luca
authors.initials: L
authors.lastname: Giannessi
authors.forename: Michele
authors.initials: M
authors.lastname: Manfredda
authors.forename: Roberta
authors.initials: R
authors.lastname: Martucci
authors.forename: Andrea
authors.initials: A
authors.lastname: Mostacci
authors.forename: Bruno
authors.initials: B
authors.lastname: Paroli
authors.forename: Alberto
authors.initials: A
authors.lastname: Petralia
authors.forename: Vittoria
authors.initials: V
authors.lastname: Petrillo
authors.forename: Riccardo
authors.initials: R
authors.lastname: Pompili
authors.forename: Marco A C
authors.initials: MA
authors.lastname: Potenza
authors.forename: Marcello
authors.initials: M
authors.lastname: Quattormini
authors.forename: Julietta
authors.initials: J
authors.lastname: Rau
authors.forename: Daniele
authors.initials: D
authors.lastname: Redoglio
authors.forename: Andrea R
authors.initials: AR
authors.lastname: Rossi
authors.forename: Luca
authors.initials: L
authors.lastname: Serafini
authors.forename: Vincenzo
authors.initials: V
authors.lastname: Surrenti
authors.forename: Amalia
authors.initials: A
authors.lastname: Torre
authors.forename: Cristina
authors.initials: C
authors.lastname: Vaccarezza
authors.forename: Fabio
authors.initials: F
authors.lastname: Villa
mesh_terms: D000669:Amplifiers, Electronic; D003198:Computer Simulation; D004583:Electrons; D007834:Lasers; D008962:Models, Theoretical; D055095:Optics and Photonics / Q000379:methods*; D013816:Thermodynamics