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Spectroscopic properties and Judd-Ofelt analysis of Eu3+ in Y4Al2O9 crystals
被引:28
|作者:
Kaczkan, M.
[1
]
Turczynski, S.
[2
]
Malinowski, M.
[1
]
机构:
[1] WUT, Inst Microelect & Optoelect, Koszykowa 75, PL-00662 Warsaw, Poland
[2] Inst Elect Mat Technol, Wolczynska 133, PL-01919 Warsaw, Poland
关键词:
Optical properties;
Y4Al2O9;
crystal;
Judd-Ofelt analysis;
Laser spectroscopy;
Eu3+ ion;
ELECTRONIC-ENERGY LEVELS;
LANTHANIDE AQUO IONS;
RARE-EARTH IONS;
OPTICAL-ABSORPTION;
SINGLE-CRYSTALS;
VUV EXCITATION;
LUMINESCENCE;
PHOSPHOR;
PHOTOLUMINESCENCE;
INTENSITIES;
D O I:
10.1016/j.jlumin.2017.12.027
中图分类号:
O43 [光学];
学科分类号:
070207 ;
0803 ;
摘要:
Optical absorption, excitation and emission spectra of Eu3+ ions in Y4Al2O9 were investigated. Judd-Ofelt intensity parameters for f-f transitions were derived from the emission spectra and also from the integrated absorption spectra. These parameters were used to calculate the total spontaneous emission probabilities (A(R)), lifetimes (tau(R)) and branching ratios (beta(R)) for D-5(0) excited state of Eu3+. The calculated values of tau(R) and beta(R) are compared with the measured values for D-5(0) level. The stimulated emission cross-sections sigma were also evaluated for the D-5(0) -> F-7(J) transitions for the first time in this system.
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页码:111 / 115
页数:5
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