【作者】 宋博； 薛汇丽； 曾彬； 郑芳； 杨魁胜；

【Author】 SONG Bo, XUE Hui-li, ZENG Bin , ZHENG Fang, YANG Kui-sheng (School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China)

【机构】 长春理工大学材料科学与工程学院；

【摘要】 系用熔融技术制备了Er3+/Yb3+双掺氟氧化物微晶玻璃,通过实验确定了掺稀土离子微晶玻璃的配比、熔化温度和退火温度。采用ACTO-2758光谱仪测得样品的拉曼光谱,并讨论基质成分的声子能对发光效率的影响。采用日本产的Hitachi F-4500荧光光度计,激发波长为980 nm激光器测定了样品的发射光谱。通过对光谱的分析,建立了上转换发光机制。测量了发光强度与抽运功率的关系,通过非线性拟合得出的斜率,确定了样品的528 nm,542 nm和655 nm发射均为双光子过程。更多还原

【Abstract】 Er3+ /Yb3+ -codoped oxyfluoride silicate glass has been prepared with melting technique. The compositions and the melting temperature and the annealing temperature of the rare earth-doped crystallite glass were determined through the experiment. The Roman spectra were gotten by ACTO-2758 spetrometer, and the impact of the efficiency of luminescence caused by phonon energy of host components was discussed . The emission spectra of samples were measured with the Hitachi F-4500 fluorescent photometer upon excitation 980nm wavelength laser. The up-conversion luminescence mechanisms were built up through analyzing the spectrum. By measuring the relationship between luminescent intensity and pump power, and through nonlinear fitting, it is confirmed that the green(528 nm,542 nm) and red(655 nm)emissions all belong to two-photon processes.更多还原