Optical properties of erbium-doped organic polydentate cage complexes
Optical properties of erbium-doped organic polydentate cage complexes
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DOI：
10.1063/1.366721
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发表时间：
1998-01-01
影响因子：
3.2
通讯作者：
Hofstraat, JW
中科院分区：
文献类型：
--
作者：
Slooff, LH;Polman, A;Hofstraat, JW
研究了不同掺铒半球形多齿有机笼状配合物的光学性质，并将其应用于基于聚合物的平面光学放大器。由于Er3+中的4f内跃迁，在1.54 μ m的室温下观察到光致发光。Er被直接激发为4f流形之一（在488nm处），或通过笼的芳香部分间接激发为287nm处。发光光谱为70 nm宽（全宽度最大的一半），是已知的任何掺铒材料中最高的，可实现光学放大的高增益带宽。1.54 μ m处的吸收截面为1.1x10(-20) cm(2)，高于大多数其他掺铒材料，从而获得高增益。对KBr片中的配合物进行了测量，其中配合物以小晶的形式存在，或溶解在有机溶剂二甲基甲酰胺和丁醇- od中。在KBr中，1.54 μ m处的发光寿命为
The optical properties of different erbium (Er)-doped polydentate hemispherand organic cage complexes are studied, for use in polymer-based planar optical amplifiers. Room temperature photoluminescence at 1.54 mu m is observed, due to an intra-4f transition in Er3+. The Er is directly excited into one of the 4f manifolds (at 488 nm), or indirectly (at 287 nm) via the aromatic part of the cage. The luminescence spectrum is 70 nm wide (full width at half maximum), the highest known for any Er-doped material, enabling high gain bandwidth for optical amplification. The absorption cross section at 1.54 mu m is 1.1x10(-20) cm(2), higher than in most other Er-doped materials, which allows the attainment of high gain. Measurements were performed on complexes in KBr tablets, in which the complex is present in the form of small crystallites, or dissolved in the organic solvents dimethylformamide and butanol-OD. In KBr the luminescence lifetime at 1.54 mu m is