中国激光, 2013, 40 (10): 1015001, 网络出版: 2013-09-17
掺镱铋酸盐玻璃近红外发光的温度特性
Temperature Characteristics of Near-Infrared Luminescence of Yb-Doped Bismuth-Based Glasses
材料 掺镱铋酸盐玻璃 低温荧光光谱 低温荧光寿命 低温激发光谱 materials Yb-doped bismuth-based glasses fluorescence spectrum at low temperature fluorescence lifetime at low temperature emission spectrum at low temperature
摘要
研究了组分为55Bi2O3-25B2O3-10SiO2-(10-x)Ga2O3-xYb2O3(x=0.5,2.0,5.0)掺镱铋酸盐玻璃在1 μm近红外波段发光的温度特性。测定了9 K低温到350 K高温条件下975 nm和1003 nm主次荧光峰,它们的半峰全宽基本没有大的变化,表明铋酸盐玻璃基质对镱离子的非均匀加宽是谱线加宽的主要原因。另外,电子声子耦合对镱离子荧光光谱和荧光寿命也有一定程度的影响。对于荧光寿命的温度特性,本身具有较大荧光俘获效应的镱离子的寿命受到明显影响,其中在高温区的影响比在低温区的更强。
Abstract
The temperature dependence of near-infrared around 1 μm emission properties of Yb-doped 55Bi2O3-25B2O3-10SiO2-(10-x)Ga2O3-xYb2O3(x=0.5, 2.0, 5.0) glasses is investigated. Emission spectra, covering a major 975 nm fluorescence peak with a minor 1003 nm weaker peak, are determined within the temperature range of 9 K~350 K. The full width at half-maximum of them does not change a lot. An important cause for the width of fluorescence line is inhomogeneous broadening from this bismuth-based glass host. On the other hand, the electron-phonon coupling will have some influence on the emission spectrum and emission lifetime. For the temperature dependence of lifetime, a longer emission lifetime of Yb at higher temperature region indicates a more significant influence of radiation trapping effect.
程继萌, 李韦韦, 赵国营, 李顺光, 陈伟, 胡丽丽, . 掺镱铋酸盐玻璃近红外发光的温度特性[J]. 中国激光, 2013, 40(10): 1015001. Cheng Jimeng, Li Weiwei, Zhao Guoying, Li Shunguang, Chen Wei, Hu Lili, Georges Boulon. Temperature Characteristics of Near-Infrared Luminescence of Yb-Doped Bismuth-Based Glasses[J]. Chinese Journal of Lasers, 2013, 40(10): 1015001.