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Upconversion fluorescence property of Er3+/Yb3+-codoped novel bismuth-germanium glass

机译:掺Er3 + / Yb3 +的新型铋锗玻璃的上转换荧光性能

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Infrared-to-visible upconversion fluorescence property of Er3+/Yb3+ codoped novel bismuth-germanium glass under 975 nm LD excitation has been studied. Intense green and red emissions centered at 525, 546 and 657 nm, corresponding to the transitions H-2(11/2) -> I-4(15/2), S-4(3/2) -> I-4(15/2), and F-4(9/2) -> I-4(15/2), respectively, were observed at room temperature. The quadratic dependence of the 525, 546 and 657 nm emissions on excitation power indicates that a two-photon absorption process occurs. The structure of the bismuth-germanium glass has been investigated by peak-deconvolution of FT-Raman spectrum, and the structural information was obtained from the peak wavenumbers. This novel bismuth-germanium glass with low maximum phonon energy (similar to 750 cm(-1)) can be used as potential host material for upconversion lasers. (c) 2005 Elsevier Ltd. All rights reserved.
机译:研究了Er3 + / Yb3 +共掺杂的新型铋锗玻璃在975 nm LD激发下的红外到可见光上转换荧光特性。强烈的绿色和红色发射集中在525、546和657 nm处,对应于过渡H-2(11/2)-> I-4(15/2),S-4(3/2)-> I-4在室温下分别观察到(15/2)和F-4(9/2)→I-4(15/2)。 525、546和657 nm发射对激发功率的二次依赖性表明发生了双光子吸收过程。通过FT-拉曼光谱的峰去卷积研究了铋锗玻璃的结构,并从峰波数获得了结构信息。具有较低的最大声子能量(类似于750 cm(-1))的这种新型铋锗玻璃可用作上转换激光器的潜在主体材料。 (c)2005 Elsevier Ltd.保留所有权利。

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