Open AccessPraseodymium mid-infrared emission in AlF3-based glass sensitized by ytterbium
Author(s) -
Jiquan Zhang,
Mo Liu,
Jin Yu,
Ruicong Wang,
Shijie Jia,
Zijun Liu,
Gerald Farrell,
Shunbin Wang,
Pengfei Wang
Publication year - 2021
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.438935
Subject(s) - praseodymium , ytterbium , materials science , emission spectrum , infrared , doping , optics , fiber laser , thulium , laser , absorption spectroscopy , analytical chemistry (journal) , absorption (acoustics) , broadband , stimulated emission , fluorescence , optoelectronics , spectral line , wavelength , physics , chemistry , chromatography , astronomy , metallurgy , composite material
Broadband emission was obtained over 2.6 to 4.1 μm (Pr 3+ : 1 G 4 → 3 F 4 , 3 F 3 ) in AlF 3 -based glass samples doped with different concentrations of praseodymium and 1 mol% ytterbium using a 976 nm laser pump. An efficient energy transfer process from Yb 3+ : 2 F 5/2 to Pr 3+ : 1 G 4 was analyzed through emission spectra and fluorescence lifetime values. The absorption and emission cross-sections were calculated by Füchtbauer-Ladenburg and McCumber theories and a positive gain can be obtained when P>0.3. To the best of the authors' knowledge, this work represents the first report of broadband mid-infrared emission of Pr 3+ in an AlF 3 -based glass. The results show that praseodymium doped AlF 3 -based glass sensitized by ytterbium could be a promising candidate for fiber lasers operating in mid-infrared region.