0603256 - ÚFE 2025 RIV US eng J - Článek v odborném periodiku
Grábner, Martin - Švejkarová, Bára - Aubrecht, Jan - Peterka, Pavel
Analytical Model of Thulium-Doped Fiber Laser Pumped by Two-for-One Process.
Journal of Lightwave Technology. Roč. 42, č. 8 (2024), s. 2938-2944. ISSN 0733-8724. E-ISSN 1558-2213
Grant CEP: GA ČR(CZ) GA23-05701S
Institucionální podpora: RVO:67985882
Klíčová slova: cross-relaxation * fiber laser model * Tm-doped fiber * two-for-one process
Obor OECD: Optics (including laser optics and quantum optics)
Impakt faktor: 4.1, rok: 2023 ; AIS: 0.811, rok: 2023
Způsob publikování: Omezený přístup
Web výsledku:
https://ieeexplore.ieee.org/document/10366807DOI: https://doi.org/10.1109/JLT.2023.3345001

Analytical models of rare-earth-doped fiber lasers were proposed in the past as very efficient yet reliable alternative to comprehensive numerical models. Cross-relaxation in thulium-doped fiber lasers has a great impact on their efficiency through a two-for-one process but it has not been addressed in analytical models so far. Here, the analytical model of thulium-doped fiber laser is proposed that respects the cross-relaxation mechanism of a type: 3H4→3F4, 3H6→3F4. The model is based on a two-level model and enables to express the threshold power and slope efficiency in a closed form. The effect of intrinsic losses is modeled by a physically motivated semi-empirical formula. The model is compared with the numerical one and with experimental data. Its application limits are discussed. An approximate method for checking validity conditions of the model is proposed
Trvalý link: https://hdl.handle.net/11104/0360461