Thulium-doped fiber laser with longitudinally segmented active fiber
Nowadays, one of the main challenges of thulium-doped fiber lasers is thermal management. One prospective method to significantly reduce thermal load density along the fiber is using a segmented active fiber or active fiber with a longitudinal gradient of thulium-doping concentration. Based on a theoretical model, the laser design with a segmented active fiber was proposed and initial measurements and tests were done. It was achieved 30 W of stable output power at 1940 nm with a launched slope efficiency exceeding 60 %, and better heat distribution along the fiber than in uniformly doped lasers.
Authors
- Martin Grábner (ORCID: https://orcid.org/0000-0003-1399-094X)
- Pavel Honzátko (ORCID: https://orcid.org/0000-0003-4649-4790)
- Jan Aubrecht (ORCID: https://orcid.org/0000-0002-3395-4375)
- Pavel Peterka (ORCID: https://orcid.org/0000-0002-6341-7589)
- Bára Švejkarová (ORCID: https://orcid.org/0009-0006-3604-2319)
- Michal Kamrádek (ORCID: https://orcid.org/0000-0003-0402-1872)
- Ivan Kašı́k (ORCID: https://orcid.org/0000-0002-0887-9756)
- Ondřej Podrazký (ORCID: https://orcid.org/0000-0003-4255-9366)
- Richard Švejkar (ORCID: https://orcid.org/0000-0002-2421-2177)
- W.A. Clarkson
- Jan Pokorný (ORCID: https://orcid.org/0000-0001-9143-9745)
Institutions
- Czech Academy of Sciences, Institute of Photonics and Electronics (CZ)
- University of Southampton (GB)
- Czech Technical University in Prague (CZ)
Publication Details
- Published
- 2025-05-29
- DOI
- https://doi.org/10.1117/12.3058227
- Citations
- 1
- Primary Topic
- Photonic Crystal and Fiber Optics
- Type
- article
- Field-Weighted Citation Impact
- 0.73