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Updated: May 30, 2026

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
Published on: November 22, 2019
High-power tandem pumped fiber amplifier with an output power of 2.9 kW
Christian Wirth1, Oliver Schmidt, Andrea Kliner
1Fraunhofer Institute for Applied Optics and Precision Engineering, Albert-Einstein Strasse 7, 07745 Jena, Germany.
Abstract:
We report on a high power fiber amplifier tandem pumped by an industrial style thin-disk laser. An output power of 1 kW and a very good slope efficiency of 73% have been obtained for a state-of-the-art photonic crystal fiber originally designed for short-pulse amplification. We also compare this result to an experiment, where a power of 2.9 kW could be obtained from a step-index large-mode-area fiber with the same slope efficiency.
