Two-colour generation in a chirped seeded free-electron laser: A close look

Benoît Mahieu, Enrico Allaria, Davide Castronovo, Miltcho B. Danailov, Alexander Demidovich, Giovanni De Ninno, Simone Di Mitri, William M. Fawley, Eugenio Ferrari, Lars Fröhlich, David Gauthier, Luca Giannessi, Nicola Mahne, Giuseppe Penco, Lorenzo Raimondi, Simone Spampinati, Carlo Spezzani, Cristian Svetina, Mauro Trovò, Marco Zangrando

Research output: Contribution to journalArticle

36 Citations (Scopus)


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. © 2013 Optical Society of America.
Original languageEnglish
Pages (from-to)22728 - 22741
Number of pages14
JournalOptics Express
Issue number19
Publication statusPublished - 23 Sep 2013
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

Mahieu, B., Allaria, E., Castronovo, D., Danailov, M. B., Demidovich, A., De Ninno, G., ... Zangrando, M. (2013). Two-colour generation in a chirped seeded free-electron laser: A close look. Optics Express, 21(19), 22728 - 22741.