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Optical transitions and upconversion luminescence of Er3+-doped tellurite glass

机译：掺Er3 +的碲酸盐玻璃的光学跃迁和上转换发光

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摘要

Spectroscopic properties of Er3+-doped TeO2-WO3-Bi2O3 (TWB) glass has been investigated. The transition, probabilities, excited state lifetimes, and the branching ratios have been predicted for Er3+ based on the Judd-Ofelt theory. The lifetime of I-4(11/2) and I-4(13/2) level were measured from time-resolved fluorescence decay. The mutiphonon relaxation of I-4(11/2) -> I-4(13/2) transition in TWB glass was predicted and compared with other glass hosts. Efficient green and weak red upconversion luminescence from Er3+ centers in the glass sample was observed at room temperature, and the upconversion excitation processes have been analyzed. (c) 2006 Published by Elsevier B.V.
机译：研究了掺Er3 +的TeO2-WO3-Bi2O3（TWB）玻璃的光谱性质。根据Judd-Ofelt理论，已经预测了Er3 +的跃迁，概率，激发态寿命和支化比。从时间分辨的荧光衰减测量I-4（11/2）和I-4（13/2）水平的寿命。预测了TWB玻璃中I-4（11/2）→I-4（13/2）跃迁的多声子弛豫，并将其与其他玻璃基质进行了比较。在室温下观察到玻璃样品中Er3 +中心的有效绿色和弱红色上转换发光，并分析了上转换激发过程。 （c）2006年由Elsevier B.V.发布

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