Spectroscopic properties of Sm3+-doped lanthanum borogermanate glass

被引：73

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

页码：192 / 198

页数：7

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