0540935 - ÚFE 2021 RIV US eng C - Conference Paper (international conference)
Kamrádek, Michal - Kašík, Ivan - Aubrecht, Jan - Mrázek, Jan - Podrazký, Ondřej - Cajzl, Jakub - Vařák, Petr - Kubeček, V. - Peterka, Pavel - Honzátko, Pavel
Holmium-doped optical fibers for efficient fiber lasers.
Proceedings of SPIE. Vol. 11355. BELLINGHAM: SPIE, 2020 - (Kalli, K.; Bunge, C.), č. článku 113550C. ISBN 978-1-5106-3483-1. ISSN 0277-786X. E-ISSN 1996-756X.
[Micro-Structured and Specialty Optical Fibres VI. None (FR), 06.04.2020-10.04.2020]
R&D Projects: GA ČR(CZ) GA19-03141S
Institutional support: RVO:67985882
Keywords : Doped optical fibers * Fiber lasers * Holmium
OECD category: Optics (including laser optics and quantum optics)
Result website:
https://doi.org/10.1117/12.2559176
DOI: https://doi.org/10.1117/12.2559176

Holmium-doped silica-based optical fibers belong to intensively studied materials for fiber laser sources operating around 2.1 mu m. In this contribution, we deal with silica -based optical fibers doped with holmium and aluminum oxide. The fibers were prepared by the modified chemical vapor deposition method combined either with a solution doping or a nanoparticle doping. A large set of fibers with various dopant concentrations was characterized related to their fluorescence lifetime, laser threshold and slope efficiency. The best -performance fibers exhibited a fluorescence lifetime longer than 1 ms, a laser threshold under 200 mW and a slope efficiency around 80%. These characteristics are discussed regarding the doping method and dopant concentrations

Permanent Link: http://hdl.handle.net/11104/0318526