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Opt Lett. 2008 Jan 15;33(2):192-4.

Tunable pulses from below 300 to 970 nm with durations down to 14 fs based on a 2 MHz ytterbium-doped fiber system.

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  • 1Lehrstuhl für BioMolekulare Optik, Department für Physik, Ludwig-Maximilians-Universität, Oettingenstrasse 67, 80538 München, Germany

Abstract

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.

PMID:
18197236
[PubMed]
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