Investigation on Nonradiative Decay of the Er3+ 4I13/2 → 4I15/2 Transition in Different Tellurite Glass Matrix

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2005,（11）
• 页码范围: 2926-2928
• 页数: 3页
• 语种: 英文

摘要

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.