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3.5 kW coherently combined ultrafast fiber laser

An ultrafast laser based on coherent beam combination of four ytterbium-doped step-index fiber amplifiers is presented. The system delivers an average power of 3.5 kW and a pulse duration of 430 fs at 80 MHz repetition rate. The beam quality is excellent (M2<1.24x1.10) and the relative intensity noise is as low as 1% in the frequency span from 1 Hz to 1 MHz. The system is turn-key operable as it features an automated spatial and temporal alignment of the interferometric amplification channels.

preprint2021arXivOpen access
Michael MüllerArno KlenkeAlbrecht SteinkopffHenning StarkAndreas TünnermannJens Limpert
physics.optics
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Open access6 authors1 topic
Imported metadata coverageMissing code, dataset, citation and institution fields are tracked without dominating the paper.Details
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Michael MüllerArno KlenkeAlbrecht SteinkopffHenning StarkAndreas TünnermannJens Limpert

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