中国物理B ›› 2013, Vol. 22 ›› Issue (2): 23202-023202.doi: 10.1088/1674-1056/22/2/023202
• ATOMIC AND MOLECULAR PHYSICS • 上一篇 下一篇
李香萍a b, 陈宝玖a, 申人升b, 张金苏a, 孙佳石a, 程丽红a, 仲海洋a, 田跃a, 付少博a, 杜国同b
Li Xiang-Ping (李香萍)a b, Chen Bao-Jiu (陈宝玖)a, Shen Ren-Sheng (申人升)b, Zhang Jin-Su (张金苏)a, Sun Jia-Shi (孙佳石)a, Cheng Li-Hong (程丽红)a, Zhong Hai-Yang (仲海洋)a, Tian Yue (田跃)a, Fu Shao-Bo (付少博)a, Du Guo-Tong (杜国同 )b
摘要: The spectral properties of trivalent erbium ions (Er3+) are systematically studied in a melt-quenched germanate glass (60~GeO2-20PbO-10BaO-10K2O-0.1Ag2O) containing silver (Ag) particles. Thermal treatment of the material leads to the precipitation of Ag particles as observed by transmission electron microscopy and confirmed by absorption spectrum for the obvious surface plasmon resonance peak of Ag particles. The fluorescence from Er3+ in the 10-min-annealed sample with Ag particles is found to be 4.2 times enhancement compared with the unannealed sample excited by 488-nm Ar+ laser. A comparison is made between a spectral study performed on the unannealed Er3+-doped sample and the one annealed for 20~min. The data of absorption cross section and Judd-Ofelt intensity parameters show the agreement between the two samples no matter whether there are Ag particles, indicating that the introduction of Ag particles by post-heat treatment has no effect on the crystal field environment of Er3+ ions. And the fluorescence enhancement is attributed to the surface plasmon oscillations of Ag particles in germanate glass.
中图分类号: (Fluorescence, phosphorescence (including quenching))