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We generate white light supercontinuum from slightly subpicosecond pulses at 1.03 µm and 515 nm. We compare the spectra and stability for various crystals, focusing conditions and pulse durations, and determine the best parameters for sub-picosecond driver pulse duration. Comparing the experimental observations with the theory of white-light generation from Brodeur and Chin, it appears that in this particular range of pump pulse duration, two mechanisms interact and prevent a catastrophicdoi:10.1364/oe.23.013866 pmid:26072757 fatcat:r6qeyxcn4jgf7c47sjiyewprke