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Effect of the introduction of Na2B4O7 on erbium luminescence in tellurite glasses
Language
en
Article de revue
This item was published in
Journal of Non-Crystalline Solids. 2002, vol. 298, n° 1, p. 76-88
Elsevier
English Abstract
Compositional dependence of spontaneous emission of Er3+ was studied in borate telluriteglasses. The improvement of the luminescence at 1533 nm while pumping at 980 nm by introducing sodium tetraborate in a telluriteglass ...Read more >
Compositional dependence of spontaneous emission of Er3+ was studied in borate telluriteglasses. The improvement of the luminescence at 1533 nm while pumping at 980 nm by introducing sodium tetraborate in a telluriteglass host is discussed in Er3+ doped and Yb3+/Er3+ co-doped glasses. From the absorption, emission spectra and lifetime measurements, an optimized sodium tetraborate molar concentration between 1.25% and 2.5% was shown to induce a maximum intensity of the 1533 nm spontaneous emission in correlation with a more efficient non-radiative transfer from the pump level to the emitting level of Er3+. The introduction of Na2B4O7 shortens the radiative lifetime of the erbium pump level (4I1L/2) as well as decreases the visible luminescence resulting from up conversion effect.Read less <
English Keywords
Glasses
Luminescence
Inorganic compounds
Erbium
Tellurite
Origin
Hal imported