Amplified Emission of a Soft-X Ray Free-Electron Laser Based on Echo-Enabled Harmonic Generation
- Allaria, Enrico
- Badano, Laura
- De Ninno, Giovanni
- Di Mitri, Simone
- Diviacco, Bruno
- Fawley, William
- Ferrari, Eugenio
- Garzella, David
- Grattoni, Vanessa
- Hemsing, Erik
- Mirian, Najmeh
- Penco, Giuseppe
- Pop, Mihai
- Prat, Eduard
- Rebernik Ribič, Primoz
- Roussel, Eléonore
- Spampinati, Simone
- Spezzani, Carlo
- Trovò, Mauro
- Xiang, Dao
DOIAbstract
International audienceWe report the first evidence of substantial gain in a soft-X ray Free Electron Laser (FEL) based on Echo-Enabled Harmonic Generation (EEHG). The experiment was focused on harmonics 36 (~7.3nm) and 45 (5.8 nm) and clearly demonstrated the expected EEHG capability of generating powerful and coherent FEL pulses, with strongly reduced sensitivity to electron-beam fluctuations. The experiment was carried out at FERMI, the seeded FEL user facility at Elettra-Sincrotrone Trieste
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