Influence of multiphonon and cross relaxations on 3P0 and 1D2 emission levels of Pr3+ doped borosilicate glasses for broad band signal amplification
作者:V. Naresh、Byoung S. Ham
DOI:10.1016/j.jallcom.2015.12.246
日期:2016.4
Pr 3+ ions. Visible emissionspectrum of Pr 3+ glass is composed of two prominent emission bands at 493 nm ( 3 P 0 → 3 H 4 ) and 605 nm ( 1 D 2 → 3 H 4 ) when excited by 448 nm. In NIR region a narrow emission band at 1.06 μm ( 1 D 2 → 3 F 3 ) and ultra-broad emission band at 1.49 μm ( 1 D 2 → 1 G 4 ) are observed for 488 nm excitation. For these emissiontransitions, emission decay curves are measured
摘要 我们讨论了源自 Pr 3+ 玻璃的 3 P 0 和 1 D 2 能级的可见-近红外 (Vis-NIR) 发射的非辐射弛豫。主体锂铝硼硅酸盐 (LABS) 玻璃的热稳定性通过热重分析和差热分析进行评估。通过傅里叶变换红外光谱和拉曼光谱曲线对宿主 LABS 玻璃进行结构分析,有助于了解 OH 含量和声子能量对 Pr 3+ 离子发光特性的影响。当被 448 nm 激发时,Pr 3+ 玻璃的可见发射光谱由 493 nm ( 3 P 0 → 3 H 4 ) 和 605 nm ( 1 D 2 → 3 H 4 ) 的两个突出发射带组成。在 NIR 区域,488 nm 激发观察到 1.06 μm (1 D 2 → 3 F 3 ) 处的窄发射带和 1.49 μm (1 D 2 → 1 G 4 ) 处的超宽发射带。对于这些发射转变,测量和分析发射衰减曲线。由于非辐射能量转移导致的寿命缩短可以通过多声子相