Südmeyer T, Brunner F, Innerhofer E, Paschotta R, Furusawa K, Baggett J C, Monro T M, Richardson D J, Keller U
Ultrafast Laser Physics, Institute of Quantum Electronics, Swiss Federal Institute of Technology, ETH Hönggerberg HPT, 8093 Zürich, Switzerland.
Opt Lett. 2003 Oct 15;28(20):1951-3. doi: 10.1364/ol.28.001951.
We demonstrate that nonlinear fiber compression is possible at unprecedented average power levels by use of a large-mode-area holey (microstructured) fiber and a passively mode-locked thin disk Yb:YAG laser operating at 1030 nm. We broaden the optical spectrum of the 810-fs pump pulses by nonlinear propagation in the fiber and remove the resultant chirp with a dispersive prism pair to achieve 18 W of average power in 33-fs pulses with a peak power of 12 MW and a repetition rate of 34 MHz. The output beam is nearly diffraction limited and is linearly polarized.
