Measurement of power spectral density of broad-spectrum visible light with heterodyne near field scattering and its scalability to betatron radiation

Optics Express
M SianoM A C Potenza

Abstract

We exploit the speckle field generated by scattering from a colloidal suspension to access both spatial and temporal coherence properties of broadband radiation. By applying the Wiener-Khinchine theorem to the retrieved temporal coherence function, information about the emission spectrum of the source is obtained in good agreement with the results of a grating spectrometer. Experiments have been performed with visible light. We prove more generally that our approach can be considered as a tool for modeling a variety of cases. Here we discuss how to apply such diagnostics to broad-spectrum betatron radiation produced in the laser-driven wakefield accelerator under development at SPARC LAB facility in Frascati.

References

Dec 17, 2004·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·F FerriM Giglio
Apr 7, 2010·Physical Review Letters·M D AlaimoM Giglio

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Citations

Aug 6, 2020·The Review of Scientific Instruments·Llorenç CremonesiMarco A C Potenza

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