Energy transfer coefficients in thulium-doped silica fibers

0543288 - ÚFE 2022 RIV US eng J - Článek v odborném periodiku
Kamrádek, Michal - Aubrecht, Jan - Vařák, Petr - Cajzl, J. - Kubeček, V. - Honzátko, Pavel - Kašík, Ivan - Peterka, Pavel
Energy transfer coefficients in thulium-doped silica fibers.
Optical Materials Express. Roč. 11, č. 6 (2021), s. 1805-1814. ISSN 2159-3930
Grant CEP: GA ČR(CZ) GA19-03141S
Institucionální podpora: RVO:67985882
Klíčová slova: Energy transfer * Fiber lasers * Silica * Thulium
Obor OECD: Optics (including laser optics and quantum optics)
Impakt faktor: 3.074, rok: 2021
Způsob publikování: Open access
https://doi.org/10.1364/OME.427456

Energy transfer coefficients in thulium-doped silica fibers are key parameters for a reliable numerical modeling and optimization of high-power fiber lasers pumped at 790 nm and emitting around eye-safer wavelength of 2 mu m. We report on determination of the energy transfer coefficients by comparing experimental values and rate-equation-based modeling of thulium fluorescence decays. The study was performed using two pump, 792 nm and 1620 nm, and two signal, 800 nm and 2 mu m, wavelengths. The following values were obtained k(3011) = (1.9 +/- 0.2) x 10(-22 )m(3 )S(-1),( ) k(1130) = (1.4 +/- 0.2) x 10(-23) m(3) S-1 and k(1120) = (3.5 +/- 0.1) x 10(-23) m(3) s(-1). To the best of our knowledge, this study involves so far the most comprehensive comparison of various fluorescence decays in terms of excitation and detection wavelengths as well as excitation powers
Trvalý link: http://hdl.handle.net/11104/0320521