We describe the method of Heterodyne Near Field Speckles (HNFS) for the characterization of spatial and temporal coherence of radiation. The method relies on the statistical properties of the speckle field produced by spherical particles randomly distributed and suspended in a fluid. We report preliminary results obtained with broadband light sources. We discuss the results obtained with the Self-Amplified Spontaneous Emission free electron laser SPARC LAB. This method will enable to calibrate and realize a diagnostics for the X-ray, broadband betatron radiation emitted in laser-plasma accelerators.

Measure of the transverse coherence of a self amplified spontaneous emission of a free electron laser with the heterodyne speckle method / M. Siano, B. Paroli, M. Manfredda, M. Alaimo, M.A.C. Potenza (PROCEEDINGS OF SPIE, THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING). - In: Advances in X-ray Free-Electron Lasers Instrumentation III / [a cura di] S.G. Biedron. - [s.l] : SPIE, 2015. - ISBN 9781628416336. - pp. 95120B (( Intervento presentato al 3. convegno Conference on Advances in X-Ray Free-Electron Lasers Instrumentation tenutosi a Prague nel 2015.

Measure of the transverse coherence of a self amplified spontaneous emission of a free electron laser with the heterodyne speckle method

M. Siano
Primo
;
B. Paroli
Secondo
;
M. Manfredda;M. Alaimo
Penultimo
;
M.A.C. Potenza
Ultimo
2015

Abstract

We describe the method of Heterodyne Near Field Speckles (HNFS) for the characterization of spatial and temporal coherence of radiation. The method relies on the statistical properties of the speckle field produced by spherical particles randomly distributed and suspended in a fluid. We report preliminary results obtained with broadband light sources. We discuss the results obtained with the Self-Amplified Spontaneous Emission free electron laser SPARC LAB. This method will enable to calibrate and realize a diagnostics for the X-ray, broadband betatron radiation emitted in laser-plasma accelerators.
Heterodyne Speckles; Spatial Coherence; Temporal Coherence; Synchrotron; FEL
Settore FIS/03 - Fisica della Materia
The Society of Photo-Optical Instrumentation Engineers (SPIE)
Book Part (author)
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/642324
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