Optical Absorption and Fluorescence Properties of Er3+/Yb3+ Codoped Lead Bismuth Alumina Borate Glasses

被引:0
作者
Goud, K. Krishna Murthy [1 ]
Reddy, M. Chandra Shekhar [1 ]
Rao, B. Appa [1 ]
机构
[1] Osmania Univ, Dept Phys, Hyderabad 500007, Andhra Pradesh, India
来源
SOLID STATE PHYSICS: PROCEEDINGS OF THE 58TH DAE SOLID STATE PHYSICS SYMPOSIUM 2013, PTS A & B | 2014年 / 1591卷
关键词
Optical absorption; FTIR; Photo luminescence; Glasses;
D O I
10.1063/1.4872770
中图分类号
O59 [应用物理学];
学科分类号
摘要
Lead bismuth alumina borate glasses codoped with Er3+/Yb3+ were prepared by melt quenching technique. Optical absorption, FTIR and photoluminescence spectra of these glasses have been studied. Judd-Ofelt theory has been applied to to the f <-> f transitions for evaluating Omega(2), Omega(4) and Omega(6) parameters. Radiative properties like branching ratio beta(r) and the radiative life time tau(R) have been determined on the basis of Judd- Ofelt theory. Upconversion emissions have been observed under 980nm laser excitation at room temperature. Green and red up- conversion emissions are centered at 530, 550 and 656 nm corresponding to H-2(11/2) -> I-4(15/2), S-4(3/2) -> I-4(15/2) and F-4(9/2) -> I-4(15/2) transitions of Er3+ respectively. The results obtained are discussed quantitatively based on the energy transfer between Yb3+ and Er3+.
引用
收藏
页码:828 / 830
页数:3
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