Experimental determination of the nonlinear refractive index in an operating Cr:forsterite femtosecond laser
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en
Article de revue
Ce document a été publié dans
Optics Communications. 1997-08-15, vol. 141, n° 1-2, p. 69-74
Elsevier
Résumé en anglais
The characteristics of a femtosecond forsterite Kerr-lens mode-locked laser pumped synchronously by an Nd:YAG laser are reported. Transform-limited femtosecond pulses of 60-fs (FWHM) duration with average TEM00 output ...Lire la suite >
The characteristics of a femtosecond forsterite Kerr-lens mode-locked laser pumped synchronously by an Nd:YAG laser are reported. Transform-limited femtosecond pulses of 60-fs (FWHM) duration with average TEM00 output powers of 200 mW at 1.25 μm were generated. Experimental studies of power stability and self-starting regime are described and a new experimental method to determine the nonlinear refractive index of the chromium-doped forsterite crystal (which is either the laser rod) is reported. We infer a value of 6 × 10−16 cm2/W at 1.25 μm, making possible Kerr-lens mode-locking.< Réduire
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