Spectroscopic Studies of Er³⁺-Yb³⁺ Codoped Multicomposition Tellurite Oxide Glass

Abstract

Multicomposition of Er3+-Yb3+codoped tellurite oxide, TeO2-ZnO-PbO-TiO2-Na2O glass has been investigated. Detailed spectroscopic study of the Judd-Ofelt analysis has been performed from the measured absorption spectrum in order to obtain the intensity parameters Ωt(t=2, 4, 6). The calculated Ωtvalues were then utilized in the determination of transition probabilities, radiative lifetimes and branching ratios of the Er3+transitions between theJ(upper)-J(lower) manifolds. Both visible upconversion and near-infrared spectra were characterized under the 980 nm laser diode excitation at room temperature.

Structural, Thermal and Optical Properties of Rare Earth Doped Lead-Tellurite Oxide Glasses

“…As compared to host glass, the erbium doped glasses have shown an abrupt reduction of the high frequency region of the Raman spectra. The emerging of lower frequency band around 350 cm −1 and another peak around 250 cm −1 could be also assigned to the formation of another [TeO3]tp structural units with NBOs and (or) Te-O-Pb linkages and Er-O bonds respectively [10]. (due to spectrum deconvolution and clarity purposes only G1 and G4 glasses are shown here for comparison.…”