Up-conversion mechanisms in Er3+ doped YbAG crystals

被引：12
作者：
Kaczkan, Marcin [1 ]
Borowska, Maja [1 ]
Malinowski, Michal [1 ,2 ]
Lukasiewicz, Tadeusz [2 ]
Kolodziejak, Katarzyna [2 ]
机构：
[1] Inst Microelect & Optoelect PW, PL-00662 Warsaw, Poland
[2] Inst Elect Mat Technol, PL-01919 Warsaw, Poland
来源：
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2009年 / 246卷 / 07期
关键词：
EXCITED-STATE-ABSORPTION; LOW-CONCENTRATED ER; ENERGY-TRANSFER; FLUORESCENCE CHARACTERISTICS; LASER-EMISSION; YAG CRYSTALS; GREEN; YB3+; LUMINESCENCE; DYNAMICS;
D O I：
10.1002/pssb.200844428
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Up-conversion phenomena leading to the red, green and violet emissions in erbium doped ytterbium-aluminum garnet (YbAG) are investigated. Absorption and emission spectra and luminescence dynamics from various excited states of YbAG:Er3+ were registered. The low temperature absorption spectra were used to determine Stark levels energies of Er3+ ion in the investigated host. Emissions from the high lying excited states (2)G(9/2), S-4(3/2) and F-4(9/2) of Er3+ were characterized under pulsed multi-photon IR excitation in the region of wavelength corresponding to the strong F-2(7/2) -> F-2(5/2) absorption transition of Yb3+ ions. Using the rate equations formalism the dynamics of the observed emissions were modeled. From the comparison of the measured and calculated decays the energy transfer rates between Yb3+ and Er3+ ions were evaluated. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
引用
收藏
页码：1677 / 1685
页数：9
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