Judd-Ofelt analysis of Ho3+ doped in ceramic CaSc2O4

被引：18

作者：

Georgescu, Serban ^{[1
]}

Stefan, Angela ^{[1
,2
]}

Toma, Octavian ^{[1
]}

Voiculescu, Ana-Maria ^{[1
]}

机构：

[1] Natl Inst Laser Plasma & Radiat Phys, Magurele Ilfov 077125, Romania

[2] Univ Bucharest, Fac Phys, Magurele Ilfov 077125, Romania

来源：

JOURNAL OF LUMINESCENCE | 2015年 / 162卷

关键词：

CaSc2O4; Judd-Ofelt; Ho3+; RARE-EARTH IONS; OPTICAL-ABSORPTION INTENSITIES; ENERGY-TRANSFER; UP-CONVERSION; SPECTROSCOPIC PROPERTIES; FLUORIDE GLASSES; CALCIUM SCANDATE; SINGLE-CRYSTALS; LUMINESCENCE; PROBABILITIES;

D O I：

10.1016/j.jlumin.2015.02.040

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A Judd-Ofelt analysis was performed on a calcium scandate (CaSc2O4) ceramic sample doped with 2 at% Ho3+. Using the measured lifetime of I-5(7) level to calibrate the absorption spectrum, the Judd-Ofelt parameters were obtained: Omega(2) = 3.78 x 10(-20) cm(2), Omega(4) = 5.17 x 10(-20) cm(2), and Omega(6) = 1.92 x 10(-20) cm(2). The electric-dipole and magnetic-dipole transition probabilities, radiative lifetimes and luminescence branching ratios were calculated. The quantum efficiency of the green emitting levels (F-5(4), S-5(2)) was found: 54%. The calibration method also allowed the estimation of the 'effective' thickness of the ceramic sample: approximately eight times greater than the geometric thickness. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：174 / 179

页数：6

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