【摘 要】
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Three kinds of Er3+-doped tellurite glasses with different hydroxyl groups are prepared by the conventional melt-quenching method. Infrared spectra are measured
【机 构】
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Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800“,”Coll
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Three kinds of Er3+-doped tellurite glasses with different hydroxyl groups are prepared by the conventional melt-quenching method. Infrared spectra are measured to estimate the exact content of OH- groups in samples.The maximum phonon energy in glasses are obtained by measuring the Raman scattering spectra. The strength parametersΩt (t = 2, 4, 6) for a11 the samples are calculated and compared. The nonradiative decay rate of the Er3+ 4I13/2 → 4I15/2 transition are calculated for the glass samples with different phonon energy and OH- group contents. Finally, the effect of OH- groups on fluorescence decay rate of Er3+ is analysed, the constant KoH-Er of TWN, TZPL and TZL glasses are calculated to be 9.2 × 10-19 cm4s-1, 5.9 × 10-19 cm4s-1, and 3.5 × 10-19 cm4s-1,respectively.
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