0588274 - ÚFE 2026 RIV NL eng J - Journal Article
Grábner, Martin - Švejkarová, Bára - Aubrecht, Jan - Pokorný, Jan - Honzátko, Pavel - Peterka, Pavel
Rise of amplified spontaneous emission in high-power thulium-doped fiber lasers and amplifiers due to self-heating.
Optics and Laser Technology. Roč. 180, Jan (2025), č. článku 111428. ISSN 0030-3992. E-ISSN 1879-2545
R&D Projects: GA MŠMT(CZ) EH22_008/0004573; GA ČR(CZ) GA23-05701S
Institutional support: RVO:67985882
Keywords : Thulium-doped fiber laser * Amplified spontaneous emission * Self-heating * Thermal effects
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 4.6, year: 2023 ; AIS: 0.698, rok: 2023
Method of publishing: Limited access
Result website:
https://www.sciencedirect.com/science/article/pii/S0030399224008867?via%3DihubDOI: https://doi.org/10.1016/j.optlastec.2024.111428

The performance of high-power fiber lasers is limited by different thermal mechanisms such as a variation of spectroscopic quantities with temperature. In this paper, the effect of temperature dependent thulium cross sections on high-power thulium-doped fiber lasers and amplifiers pumped at 790 nm and operating above 1900 nm is investigated by means of numerical simulations and use of analytical models. The most significant self-heating effect was identified as an output signal power drop associated with increased amplified spontaneous emission caused by the temperature induced shift of the transparency wavelength of the single pass gain spectra.
Permanent Link: https://hdl.handle.net/11104/0360447