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Schriever, Christian; Lochbrunner, Stefan; Krok, Patrizia and Riedle, Eberhard ORCID logoORCID: https://orcid.org/0000-0002-2672-5718 (January 2008): Tunable pulses from below 300 to 970nm with durations down to 14fs based on a 2MHz ytterbium-doped fiber system. In: Optics Letters, Vol. 33, No. 2: pp. 192-194

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A noncollinearly phase-matched optical parametric amplifier pumped by a commercial 2 MHz fiber laser is presented and discussed. The pump system allows the direct generation of a seed continuum from a sapphire plate. Clean pulses with up to 860 nJ energy and down to 14 fs pulse length can be obtained over a fundamental tuning range from 620 to 970 nm. Conversion by second- and third-harmonic generation as well as sum frequency mixing results in an extended tuning range down to well below 300 nm. (c) 2008 Optical Society of America.

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