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arXiv · 1306.1470

Two-colour generation in a chirped seeded Free-Electron Laser

B. Mahieu·E. Allaria·D. Castronovo·M. B. Danailov·A. Demidovich·G. De Ninno·S. Di Mitri·W. M. Fawley·E. Ferrari·L. Fröhlich·D. Gauthier·L. Giannessi·N. Mahne·G. Penco·L. Raimondi·S. Spampinati·C. Spezzani·C. Svetina·M . Trovò·M . Zangrando
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Abstract

We present the experimental demonstration of a method for generating two spectrally and temporally separated pulses by an externally seeded, single-pass free-electron laser operating in the extreme-ultraviolet spectral range. Our results, collected on the FERMI@Elettra facility and confirmed by numerical simulations, demonstrate the possibility of controlling both the spectral and temporal features of the generated pulses. A free-electron laser operated in this mode becomes a suitable light source for jitter-free, two-colour pump-probe experiments.

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B. Mahieu, E. Allaria, D. Castronovo, M. B. Danailov, A. Demidovich, G. De Ninno, S. Di Mitri, W. M. Fawley, E. Ferrari, L. Fröhlich, D. Gauthier, L. Giannessi, N. Mahne, G. Penco, L. Raimondi, S. Spampinati, C. Spezzani, C. Svetina, M . Trovò, M . Zangrando. 2013-06-06. Two-colour generation in a chirped seeded Free-Electron Laser. https://doi.org/10.1364/oe.21.022728

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