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Licensed Unlicensed Requires Authentication Published by De Gruyter October 15, 2021

High-power ultrafast fiber lasers for materials processing

  • Tino Eidam EMAIL logo , Sven Breitkopf , Oliver Herrfurth , Fabian Stutzki , Marco Kienel , Steffen Hädrich , Christian Gaida and Jens Limpert


State-of-the-art fiber-laser systems can deliver femtosecond pulses at average powers beyond the kilowatt level and multi-mJ pulse energies by employing advanced large-mode-area fiber designs, chirped-pulse amplification, and the coherent combination of parallel fiber amplifiers. By using sophisticated coherent phase control, one or even several output ports can be modulated at virtually arbitrary power levels and switching speeds. In addition, an all-fiber setup for GHz-burst generation is described allowing to access an even wider range of laser parameters. The combination of all these approaches together with the robustness, efficiency, and excellent beam quality inherent to fiber-laser technology has the potential to strongly improve existing materials-processing applications.

Corresponding author: Tino Eidam, Active Fiber Systems GmbH, Jena, Germany, E-mail:

Funding source: German Federal Ministry of Education and Research, Project “PINT”

Award Identifier / Grant number: 13N15244

Funding source: Free State of Thuringia/EFRE,

Award Identifier / Grant number: Project “Ultraflex”

Award Identifier / Grant number: 2018FE0072

Funding source: Free State of Thuringia/EFRE, Project “Parallas”

Award Identifier / Grant number: 2015FE9157

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: German Federal Ministry of Education and Research (project “PINT”, 13N15244, funding program Photonics Research Germany); Free State of Thuringia/EFRE (project “Ultraflex”, 2018FE0072), Free State of Thuringia/EFRE (project “Parallas”, 2015FE9157).

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.


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Received: 2021-07-15
Accepted: 2021-09-27
Published Online: 2021-10-15
Published in Print: 2021-11-25

© 2021 Walter de Gruyter GmbH, Berlin/Boston

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