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

页码：1677 / 1685

页数：9

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