Spectral characteristics of ultrashort pulses in Kerr-lens mode-locked lasers

Vladimir L. Kalashnikov; E. Sorokin; Irina T. Sorokina

doi:10.1117/12.469106

29 May 2002 Spectral characteristics of ultrashort pulses in Kerr-lens mode-locked lasers

Vladimir L. Kalashnikov, E. Sorokin, Irina T. Sorokina

Proceedings Volume 4752, ICONO 2001: Ultrafast Phenomena and Strong Laser Fields; (2002) https://doi.org/10.1117/12.469106
Event: XVII International Conference on Coherent and Nonlinear Optics (ICONO 2001), 2001, Minsk, Belarus

Abstract

A number of factors that influence spectral position of the femtosecond pulse in a Kerr-lens modelocked Cr:LiSGaF laser have been identified: high-order dispersion, gain saturation, reabsorption from the ground state, and stimulated Raman scattering. Using the one-dimensional numerical model for the simulation of the laser cavity, the relative contributions of different factors have been compared. The Raman effect provides the largest self- frequency shift from the gain peak (up to 60 nm), followed by the gain saturation (approximately 25 nm), while the high-order dispersion contribution is insignificant (approximately 5 nm). Comparison with the experimental data confirm that the stimulated Raman scattering is a main cause of the ultrashort pulse self-frequency shift observed in Cr:LiSGaF and Cr:LiSAF lasers.

Citation Download Citation

Vladimir L. Kalashnikov, E. Sorokin, and Irina T. Sorokina "Spectral characteristics of ultrashort pulses in Kerr-lens mode-locked lasers", Proc. SPIE 4752, ICONO 2001: Ultrafast Phenomena and Strong Laser Fields, (29 May 2002); https://doi.org/10.1117/12.469106

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