Influence of B2O3 on Spectroscopic Properties of Er3+/Yb3+ Co-Doped Tungsten-Tellurite Glasses
来源期刊：JOURNAL OF RARE EARTHS2006年第6期
论文作者：Zhang Xudong Shen Xiang Xu Tiefeng Nie Qiuhua Zhang Xianghua Dai Shixun
Key words：TeO2-WO3-B2O3; four-level system; lifetime; spectroscopic properties; rare earths;
Abstract: A series of novel Er3+/Yb3+ co-doped (85-x)TeO2-15WO3-xB2O3 (TWB; x=2%, 5%, 8% (mole fraction)) glasses were prepared. Influence of B2O3 on the spectroscopic properties of Er3+/Yb3+ co-doped tungsten-tellurite glasses were investigated. It is found that the intensity of 1.5 μm fluorescence, lifetime of the 4I13/2 level and upconversion fluorescence all decrease with the increase of B2O3 content. The product of full width at half maximum (FWHM) and sti-mulated emission cross-section (σepeak) of Er3+∶4I13/2→4I15/2 transition has an optimum when B2O3 is 5% (mole fraction). The emission spectra of Er3+: 4I13/2→4I15/2 transition was analyzed using peak-fit routine, and an equivalent four-level system was proposed to estimate the stark splitting for the 4I15/2 and 4I13/2 levels of Er3+ ions in TWB glasses at room temperature.
Zhang Xudong1，Shen Xiang1，Xu Tiefeng1，Nie Qiuhua1，Zhang Xianghua2，Dai Shixun1
(1.Faculty of Information Science and Engineering, State Key Laboratory Base of Novel Functional Materials and Preparation Science, Ningbo University, Zhejiang 315211, China;
2.UMR-CNRS 6512 "Verres et Céramiques", Institut de Chimie de Rennes, Université de Rennes 1, Campus de Beaulieu, 35042, Rennes Cedex, France)
Abstract:A series of novel Er3+/Yb3+ co-doped (85-x)TeO2-15WO3-xB2O3 (TWB; x=2%, 5%, 8% (mole fraction)) glasses were prepared. Influence of B2O3 on the spectroscopic properties of Er3+/Yb3+ co-doped tungsten-tellurite glasses were investigated. It is found that the intensity of 1.5 μm fluorescence, lifetime of the 4I13/2 level and upconversion fluorescence all decrease with the increase of B2O3 content. The product of full width at half maximum (FWHM) and sti-mulated emission cross-section (σepeak) of Er3+∶4I13/2→4I15/2 transition has an optimum when B2O3 is 5% (mole fraction). The emission spectra of Er3+: 4I13/2→4I15/2 transition was analyzed using peak-fit routine, and an equivalent four-level system was proposed to estimate the stark splitting for the 4I15/2 and 4I13/2 levels of Er3+ ions in TWB glasses at room temperature.
Key words:TeO2-WO3-B2O3; four-level system; lifetime; spectroscopic properties; rare earths;
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