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Proceedings Paper

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

Paper Details

Date Published: 29 May 2002
PDF: 13 pages
Proc. SPIE 4752, ICONO 2001: Ultrafast Phenomena and Strong Laser Fields, (29 May 2002); doi: 10.1117/12.469106
Show Author Affiliations
Vladimir L. Kalashnikov, Technische Univ. Wien (Belarus)
E. Sorokin, Technische Univ. Wien (Austria)
Irina T. Sorokina, Technische Univ. Wien (Austria)

Published in SPIE Proceedings Vol. 4752:
ICONO 2001: Ultrafast Phenomena and Strong Laser Fields
Vyacheslav M. Gordienko; Anatoly A. Afanas'ev; Vladimir V. Shuvalov, Editor(s)

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