Abstract
Tellurite- and bismuth-based glasses with the composition of TeO 2–B 2O 3–GeO 2–Na 2O–Er 2O 3 and Bi 2O 3–B 2O 3–GeO 2–Na 2O–Er 2O 3, respectively, were prepared by the conventional high-temperature melt-quenching method. Infrared spectra were measured in order to investigate the effects of glass composition and bubbling oxygen treatment on the vibration absorptions of OH groups. The constants K OH–Er for Er 3+ in tellurite- and bismuth-based glasses, which represent the interaction strength between Er 3+ and OH groups in the case of energy migration were calculated, and the effects of OH groups upon the fluorescence lifetimes of 4I 13/2 level and the emission intensities at 1.5 μm band of Er 3+ in both glasses were investigated and compared in detail under different oxygen bubbling time.
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