Article révisé par les pairs
Résumé : Femtosecond soliton generation in air-silica microstructure fibers (ASMF) was investigated. The generation of femtosecond Raman soliton pulses tunable over 200 nm in the near infrared was reported. The intensity and phase of the input pulse was determined by second-harmonic generation frequency-resolved optical gating. An experimentally determined Raman response for standard silica fibers was used in the simulations that included both instantaneous electronic and delayed Raman contributions. The spectra resulting from the simulations were in agreement with the measured spectra. The numerical temporal behaviour was also consistent with the experimentally measured intensity autocorrelation.