Temperature-dependent cross section spectra for thulium-doped fiber lasers

0574761 - ÚFE 2024 RIV US eng J - Journal Article
Jiříčková, Bára - Grábner, Martin - Jauregui, C. - Aubrecht, Jan - Schreiber, Ondřej - Peterka, Pavel
Temperature-dependent cross section spectra for thulium-doped fiber lasers.
Optics Letters. Roč. 48, č. 3 (2023), s. 811-814. ISSN 0146-9592. E-ISSN 1539-4794
R&D Projects: GA ČR(CZ) GA23-05701S
Institutional support: RVO:67985882
Keywords : Fiber amplifiers * Thulium-doped fibers * emperature dependent
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 3.6, year: 2022
Method of publishing: Limited access
https://doi.org/10.1364/OL.479313

An investigation on the temperature dependence of spectroscopic parameters of trivalent thulium ions is important for the design of high-power, thulium-doped fiber lasers and amplifiers. In this Letter, the thulium absorption/emission cross sections are determined in the spectral range 700-2200 nm and in the temperature range from196 & DEG,C to 300 & DEG,C. The spectra are obtained from the absorption and emission measurements of a thulium-doped fiber and from measured thulium concentration profiles. Attempts were made to estimate the temperature dependence of the spectra where the measurements are not accessible. Firstly, the spectra are fitted to a multi-Gaussian model with temperature dependent parameters. Secondly, a physically motivated model of the cross section spectra is proposed and analyzed.
Permanent Link: https://hdl.handle.net/11104/0345201