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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.'
address:
- 'Elettra - Sincrotrone Trieste, S.S.14 - km 163.5 in AREA Science Park, 34149 Basovizza, Italy'
- 'Service des Photons Atomes et Molécules, Commissariat à l’Energie Atomique, Centre d’Etudes de Saclay, Bâtiment 522, 91191 Gif-sur-Yvette, France'
- 'Laboratory of Quantum Optics, University of Nova Gorica, Vipavska 11c, 5270 Ajdovščina, Slovenia'
- 'Theory Group - ENEA C.R. Frascati, Via E. Fermi 45, 00044 Frascati, Italy'
- 'University of Trieste, Graduate School of Nanotechnology, Piazzale Europa 1, 34127 Trieste, Italy'
- 'IOM-CNR, S.S.14 - km 163.5 in AREA Science Park, 34149 Basovizza, Italy'
author:
- 'B. Mahieu'
- 'E. Allaria'
- 'D. Castronovo'
- 'M. B. Danailov'
- 'A. Demidovich'
- 'G. De Ninno'
- 'S. Di Mitri'
- 'W. M. Fawley'
- 'E. Ferrari'
- 