Dresden 2011 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 14: Ultrakurze Laserpulse: Erzeugung 1

Q 14.5: Talk

Monday, March 14, 2011, 15:30–15:45, SCH 251

Compact 7.4 W femtosecond oscillator for white-light generation and nonlinear microscopy — •Andy Steinmann, Bernd Metzger, Robin Hegenbarth, and Harald Giessen — 4th Physics Institute and Research Center SCOPE, University of Stuttgart

Compact femtosecond laser oscillators with high average powers and MHz repetition rates are essential laser sources for a lot of applications in science. In this contribution we present a passively mode-locked two-crystal Yb:KGW oscillator delivering 7.4 W average power at a repetition rate of 41.7 MHz and 425 fs pulse duration.

With this simple, reliable, and cost efficient laser source we demonstrate nonlinear experiments such as the generation of high-power white-light pulses in tapered fibers or pumping of an optical parametric oscillator, which generates a signal power up to 2 W with femtosecond pulses tunable in a wavelength range from 1.45 to 1.88 µm.