Superior photoluminescence (PL) of Pr³⁺-In, compared to Pr³⁺-Ga, selenide-chalcogenide bulk glasses and PL of optically-clad fiber.
Superior photoluminescence (PL) of Pr³⁺-In, compared to Pr³⁺-Ga, selenide-chalcogenide bulk glasses and PL of optically-clad fiber.
复制标题
与 Pr³⁺-Ga、硒化物硫属化物块状玻璃和光学包层光纤的 PL 相比，Pr³⁺-In 具有优异的光致发光 (PL)。
作者：
H. Sakr;D. Furniss;Zhuoqi Tang;L. Sójka;N. A. Moneim;E. Barney;S. Sujecki;T. Benson;A. Seddon
与含镓类似物相比，Pr + +离子在含铟硒-硫系大块玻璃中的光致发光（PL）性能优越。我们观察到，在1.55 μm波长泵浦下，大块玻璃的中红外（MIR） PL强度从3.5 μm增加到6 μm，并且在4.7 μm波长处激发态寿命增加。本文报道了光包层光纤中的PL。众所周知，添加Ga可以增强RE³⁺的溶解度和PL行为，并被认为在玻璃中形成（[RE³⁺]- se -[Ga(III)]）。铟具有与镓相同的外电子结构，用于溶剂化re离子。此外，正如本文所观察到的，铟更重，在re离子周围局部促进了较低的声子能量，从而增强了re离子的PL行为。
The photoluminescent-(PL)-properties of Pr³⁺-ions in indium-containing selenide-chalcogenide bulk-glasses are found to be superior when compared with gallium-containing analogues. We observe circa doubling of mid-infrared (MIR) PL intensity from 3.5 to 6 μm for bulk glasses, pumped at 1.55 μm wavelength, and an increased excited state lifetime at 4.7 μm. PL is reported in optically-clad fiber. Ga addition is well known to enhance RE³⁺ solubility and PL behavior, and is believed to form ([RE³⁺]-Se-[Ga(III)]) in the glasses. Indium has the same outer electronic-structure as gallium for solvating the RE-ions. Moreover, indium is heavier and promotes lower phonon energy locally around the RE-ion, thereby enhancing the RE-ion PL behavior, as observed here.