Influences of Yb3+ ion concentration on the spectroscopic properties of silica glass
Influences of Yb3+ ion concentration on the spectroscopic properties of silica glass
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DOI：
10.1016/j.jnoncrysol.2008.04.020
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发表时间：
2008-11
影响因子：
3.5
通讯作者：
P. Barua;E. Sekiya;Kazuya Saito;A. Ikushima
中科院分区：
文献类型：
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作者：
P. Barua;E. Sekiya;Kazuya Saito;A. Ikushima
我们研究了掺镱 (Yb3+) 离子的石英玻璃的光学光谱特性，以评估其在二极管激光泵浦系统中的激光性能。 Yb 掺杂石英玻璃预制件是采用 MCVD 工艺通过溶液掺杂技术制造的。使用倒易法根据测量的吸收光谱确定受激发射截面和激光性能参数。随着 Yb3+ 离子掺杂水平的增加，观察到荧光衰减特性偏离指数行为，并且存在与 Yb3+ 离子进入石英玻璃的簇效应相关的寿命猝灭行为。然而，激光参数表明，当浓度较低时，Yb3+离子的聚集不会显着影响与预测激光性能相关的光谱特性，但在浓度较高时会变得占主导地位。
We investigated optical spectroscopic properties of silica glass doped with ytterbium (Yb3+) ions to assess their lasing performance in diode-laser pumped systems. The Yb-doped silica glass preforms were fabricated by solution doping technique using the MCVD process. The stimulated emission cross-section and laser performance parameters were determined from the measured absorption spectra using the method of reciprocity. Fluorescence decay characteristics were observed to be deviated from exponential behavior as the Yb3+ions doping level increases and there exists a lifetime quenching behavior related to the cluster effect of Yb3+ions into silica glass. Nevertheless, lasing parameters indicated that clustering of Yb3+ions does not significantly affect the spectral properties relevant to the predicted lasing performance when concentration is low, but becomes predominant at higher concentration.