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.
Mapping the transverse coherence of the self amplified spontaneous emission of a free-electron laser with the heterodyne speckle method / Alaimo, Matteo D.; Maria Pia Anania, ; Marcello, Artioli; Alberto, Bacci; Marco, Bellaveglia; Franco, Ciocci; Chiadroni, Enrica; Alessandro, Cianchi; Giuseppe, Dattoli; Giampierro Di Pirro, ; Massimo, Ferrario; Giancarlo, Gatti; Luca, Giannessi; Michele, Manfredda; Roberta, Martucci; Mostacci, Andrea; Bruno, Paroli; Alberto, Petralia; Vittoria, Petrillo; Riccardo, Pompili; Potenza, Marco A. C.; Marcello, Quattormini; Julietta, Rau; Daniele, Redoglio; Rossi, Andrea R.; Luca, Serafini; Vincenzo, Surrenti; Amalia, Torre; Cristina, Vaccarezza; Fabio, Villa. - In: OPTICS EXPRESS. - ISSN 1094-4087. - ELETTRONICO. - 22:(2014), p. 30013. [10.1364/OE.22.030013]
Mapping the transverse coherence of the self amplified spontaneous emission of a free-electron laser with the heterodyne speckle method
Enrica Chiadroni;MOSTACCI, Andrea;
2014
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
