0588274 - ÚFE 2026 RIV NL eng J - Článek v odborném periodiku
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
Grant CEP: GA MŠMT(CZ) EH22_008/0004573; GA ČR(CZ) GA23-05701S
Institucionální podpora: RVO:67985882
Klíčová slova: Thulium-doped fiber laser * Amplified spontaneous emission * Self-heating * Thermal effects
Obor OECD: Optics (including laser optics and quantum optics)
Impakt faktor: 4.6, rok: 2023 ; AIS: 0.698, rok: 2023
Způsob publikování: Omezený přístup
Web výsledku:
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.
Trvalý link: https://hdl.handle.net/11104/0360447