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Multipulse Operation and Limits of the Kerr-lens Mode Locking Stability

V.L. Kalashnikov , E. Sorokin, and I.T. Sorokina[*]

Abstract:

Numerical analysis in combination with the experimental data for Cr$ ^{2+}$:ZnSe as well as Ti:sapphire lasers reveal the following main mechanisms of the multiple pulse generation for the Kerr-lens mode-locked solid-state lasers: (i) continuum amplification due to the spectral loss growth for the ultrashort or chirped pulse and (ii) bounded perturbation rise for the high-energy pulse. The role of such laser parameters as gain saturation and relaxation, saturable and unsaturable loss, self-phase modulation, Kerr-lensing, and pump intensity is analyzed. This analysis provides basic directions of the single pulse stability enhancement and of the multiple pulse generation control.


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V.L. Kalashnikov 2002-12-28
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