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25-fs pulses with energies of 4 nJ are generated from a self-mode-locked Cr:forsterite laser with optimized cavity dispersion. The duration of the shortest pulses is limited by the gain bandwidth of Cr:forsterite. Using a model based on a solitonlike pulse formation, we infer a value of 2 × 10−16 cm2/W for the nonlinear refractive index of forsterite at 1.3 μm.
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Yanovsky et al. (1993) studied this question.
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