掺Yb硼硅酸盐玻璃的光学特性及其双光子合作上转换荧光  

Optical properties and cooperative luminescence of Yb-doped borate-silicate glasses

作　　者：李善锋[1] 苗壮[1] 彭扬[1] 张庆瑜[1] 

机构地区：[1]大连理工大学三束材料改性国家重点实验室,大连116023

出　　处：《物理学报》2006年第8期4315-4320,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:50240420656)资助的课题.~~

摘　　要：采用高温固相反应方法制备了不同掺Yb浓度的硼硅酸盐玻璃.通过室温吸收光谱、光致荧光光谱及Raman光谱的测量,系统地研究了掺Yb激光玻璃近红外的光致荧光特性.给出了硼硅酸盐玻璃中的Yb3+的吸收和发射截面,计算了Yb3+2F52能级的自发辐射寿命,并对Yb离子对的团簇上转换荧光进行了测量和分析,给出了Yb离子团簇上转换荧光光子能量与红外荧光光子能量以及声子振动能量的关系.Yb-doped borate-silicate glasses with various Yb2O3 concentrations were fabricated by means of high-temperature solid-state reaction. The absorption and the photoluminescence, as well as the Raman spectra, were measured and analyzed. The absorption and emission cross-section around 980 nm is calculated based on the absorption measurement. The dependence of radiative lifetime of Yb^3＋-^2 F5/2 on Yb2O3 concentration is also presented. The relationship between up-conversion photon and the infrared emission, together with the assistant phonon, is described according tO the up-conversion photoluminescence and Raman spectra analysis.

关 键 词：掺Yb玻璃 光致荧光 RAMAN光谱 

分 类 号：TQ171[化学工程—玻璃工业]