Spectroscopic properties of Sm3+-doped lanthanum borogermanate glass

被引：70
作者：
Rajaramakrishna, R. [1 ]
Knorr, Brian [2 ]
Dierolf, Volkmar [2 ]
Anavekar, R. V. [1 ]
Jain, H. [3 ]
机构：
[1] Bangalore Univ, Dept Phys, Bangalore 560056, Karnataka, India
[2] Lehigh Univ, Dept Phys, Bethlehem, PA 18015 USA
[3] Lehigh Univ, Dept Mat Sci & Engn, Bethlehem, PA 18015 USA
来源：
JOURNAL OF LUMINESCENCE | 2014年 / 156卷
基金：
美国国家科学基金会;
关键词：
UV-Optical absorption properties; Melt quenching technique; Germanate glass; J-O Analysis; Samarium ions; RARE-EARTH IONS; BORATE GLASSES; OPTICAL-PROPERTIES; ELECTRONIC POLARIZABILITY; OXIDE GLASSES; UP-CONVERSION; SM3+ IONS; SPECTRA; INTENSITIES; ABSORPTION;
D O I：
10.1016/j.jlumin.2014.07.021
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Ultraviolet-visible-near infrared (UV-vis-NIR) absorption and photoluminescence of (25-x) La2O3-25B(2)O(3)-50GeO(2) glass series have been studied with different concentrations (x=0.1-1.0 wt%) of Sm2O3 as an optically active dopant. The values of Judd-Ofelt (JO) parameters (Omega(t)) follow the trend Omega(2) > Omega(4) > Omega(6). Visible emission and decay times from the (4)G(5/2) level and its relative quantum efficiencies are measured. Intense reddish-orange emission corresponding to (4)G(5/2)-> H-6(7/2) transition has been observed in these glasses under 488 nm excitation. A decrease in the quantum yield is observed with increasing Sm3+ ion concentration beyond 1% doping level. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：192 / 198
页数：7
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