期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 502, 期 1, 页码 184-189出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2010.04.140
关键词
Pr:Gd3Ga5O12 crystal; J-O theory calculation; Spectroscopic properties
资金
- Science & Technology Plan Projects of Fujian Province of China [2007H0037]
- FJIRSM [SZD08001-2, SZD09001]
- Key Laboratory of Optoelectronic Materials Chemistry and Physics of CAS [2008DP173016]
- National Nature Science Foundation of China [50902129]
The room-temperature absorption spectrum, fluorescence spectra, and fluorescence decay curves of Pr3+-doped Gd3Ga5O12 single crystal were studied systematically. The standard and modified Judd-Ofelt theories were used to determine the Judd-Ofelt intensity parameters Omega(t) (t = 2, 4, 6), radiative transition probabilities, radiative lifetimes and branching ratios. The stimulated emission cross-sections and the fluorescence quantum efficiency of the promising laser levels were calculated and discussed. The multi-exponential behavior of the fluorescence decay curve of the D-1(2) -> H-3(4) transition was explained by using the Inokuti-Hirayama theory. The obtained spectroscopic results show the potential application of the Pr3+-doped Gd3Ga5O12 crystal as visible solid-state lasers. (C) 2010 Elsevier B.V. All rights reserved.
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