Higher order harmonic generation in a free-electron laser amplifier operating in the superradiant regime has been observed. Superradiance has been induced by seeding a single-pass amplifier with the second harmonic of a Ti:sapphire laser, generated in a β-Barium borate crystal, at seed intensities comparable to the free-electron laser saturation intensity. Pulse energy and spectral distributions of the harmonics up to the 11th order have been measured and compared with simulations. © 2012 American Physical Society.
High-order-harmonic generation and superradiance in a seeded free-electron laser / Giannessi, L.; Artioli, M.; Bellaveglia, M.; Briquez, F.; Chiadroni, E.; Cianchi, A.; Couprie, M. e.; Dattoli, G.; Di Palma, E.; Di Pirro, G.; Ferrario, M.; Filippetto, D.; Frassetto, F.; Gatti, G.; Labat, M.; Marcus, G.; Mostacci, Andrea; Petralia, A.; Petrillo, V.; Poletto, L.; Quattromini, M.; Rau, J. v.; Rosenzweig, J.; Sabia, E.; Serluca, M.; Spassovsky, I.; Surrenti, V.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 108:16(2012), pp. 164801-1-164801-5. [10.1103/physrevlett.108.164801]
High-order-harmonic generation and superradiance in a seeded free-electron laser
E. Chiadroni;MOSTACCI, Andrea;
2012
Abstract
Higher order harmonic generation in a free-electron laser amplifier operating in the superradiant regime has been observed. Superradiance has been induced by seeding a single-pass amplifier with the second harmonic of a Ti:sapphire laser, generated in a β-Barium borate crystal, at seed intensities comparable to the free-electron laser saturation intensity. Pulse energy and spectral distributions of the harmonics up to the 11th order have been measured and compared with simulations. © 2012 American Physical Society.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
