Harmonic radiation generated in a neon gas jet by sub-10-fs laser pulses was investigated both experimentally and theoretically. The spectral profile of the harmonics with respect to the order, their intensity and relative spectral shifts were measured as a function of the position of the gas jet. The results point out spectral features typical of the quasi-single-cycle excitation regime. A nonadiabatic three-dimensional numerical model was developed, which provides harmonic spectra in remarkable agreement with the experiments.
Spectral features and modeling of high-order harmonics generated by sub-10-fs pulses / P., Villoresi; P., Ceccherini; L., Poletto; G., Tondello; Altucci, Carlo; Bruzzese, Riccardo; DE LISIO, Corrado; M., Nisoli; S., Stagira; G., Cerullo; S., De Silvestri; O., O. S. v. e. l. t.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 85:12(2000), pp. 2494-2497. [10.1103/PhysRevLett.85.2494]
Spectral features and modeling of high-order harmonics generated by sub-10-fs pulses
ALTUCCI, CARLO;BRUZZESE, RICCARDO;DE LISIO, CORRADO;
2000
Abstract
Harmonic radiation generated in a neon gas jet by sub-10-fs laser pulses was investigated both experimentally and theoretically. The spectral profile of the harmonics with respect to the order, their intensity and relative spectral shifts were measured as a function of the position of the gas jet. The results point out spectral features typical of the quasi-single-cycle excitation regime. A nonadiabatic three-dimensional numerical model was developed, which provides harmonic spectra in remarkable agreement with the experiments.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.