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Proceedings Paper

Characterization of partially coherent ultrashort XUV pulses
Author(s): Charles Bourassin-Bouchet; Marie-Emmanuelle Couprie
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Paper Abstract

Modern ultrafast metrology relies on the postulate that the pulse to be measured is fully coherent, i.e. that it can be completely described by its spectrum and spectral phase. However, synthesizing fully coherent pulses is not always possible in practice, especially in the domain of emerging ultrashort X-ray sources where temporal metrology is strongly needed. As an example, the lack of longitudinal coherence, that is shot-to-shot fluctuations, of Free-Electron Lasers (FEL) has prevented so far their full amplitude and phase temporal characterization. To sort out this issue, we have adapted Frequency-Resolved Optical Gating (FROG), the first and one of the most widespread techniques for pulse characterization, to enable the measurement of partially coherent XUV pulses even down to the attosecond timescale. Especially, this technique allows one to overcome the sources of decoherence that normally prevent a pulse measurement, such as the spectrometer resolution or the presence of XUV/laser arrival time jitter.

Paper Details

Date Published: 12 May 2015
PDF: 9 pages
Proc. SPIE 9512, Advances in X-ray Free-Electron Lasers Instrumentation III, 951209 (12 May 2015); doi: 10.1117/12.2182428
Show Author Affiliations
Charles Bourassin-Bouchet, Synchrotron SOLEIL (France)
Marie-Emmanuelle Couprie, Synchrotron SOLEIL (France)

Published in SPIE Proceedings Vol. 9512:
Advances in X-ray Free-Electron Lasers Instrumentation III
Sandra G. Biedron, Editor(s)

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