Nd3+/Yb3+ Doped Phosphate and Antimony Glasses for Optical Fibre Source |
| D. Dorosz, J. Żmojda, M. Kochanowicz and J. Dorosz
Białystok University of Technology, Wiejska 45D, 15-351 Białystok, Poland |
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| In the article there are presented two different series of glass: fluorophosphate with molar composition: 65P2O5-8Al2O3-2BaO-5BaF2-6ZnF2-5Na2O-6MgF2-3B2O3 and antimony glasses 40Sb2O3-3Al2O3-57SiO2 doped with Nd3+ and Yb3+ ions. Dopant contents influence efficient spatial overlapping of emission level for neodymium and absorption level for ytterbium was analyzed. While exciting the produced glasses with a laser diode (λ = 808 nm) a broad luminescence spectrum (Δλ = 100 nm) has been obtained in both cases in the vicinity of 1 μm, being the superposition of the following transitions: 4F3/2 → 4I11/2 for Nd3+ and 2F5/2 → 2F7/2 for Yb3+. Based on the luminescence measurements the probability of non-radiative energy transfer was described. Because of a small difference in energy ( ≈1190 cm-1) between the laser levels of neodymium and ytterbium the resonant process of energy transfer has been obtained. |
| DOI: 10.12693/APhysPolA.118.1108 PACS numbers: 42.81.-i, 42.79.Ag, 33.20.Kf, 42.25.Bs |