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Ashworth, Stephen; Joschko, M.; Woerner, M.; Riedle, Eberhard ORCID: 0000-0002-2672-5718; Elsaesser, T. (October 1995): Generation of 16-fs pulses at 425 nm by extracavity frequency doubling of a mode-locked Ti:sapphire laser. In: Optics Letters, Vol. 20, No. 20: pp. 2120-2122
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An efficient doubling scheme capable of producing 16-fs pulses centered at 425 nm with an average power of 40 mW is described. The system uses 15-fs pulses from a continuous-wave mode-locked Ti:sapphire oscillator centered at 850 nm. The pulse characteristics resulting from doubling with beta-barium berate crystals of various lengths are presented. The results compare favorably with previous attempts at intracavity doubling and provide a more convenient route to femtosecond experiments with fully synchronized second-harmonic radiation. (C) 1995 Optical Society of America .