Energy Transfer And Up-conversion In Bi_2teo_5 Crystals Co-doped With Yb~(3+) And Tm~(3+)

R. Lisiecki; G. Dominiak-Dzik; W. Ryba-Romanowski; I. Foeldvari; A. Peter

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Energy Transfer And Up-conversion In Bi_2teo_5 Crystals Co-doped With Yb~(3+) And Tm~(3+)

机译：Yb〜（3+）和Tm〜（3+）共掺杂Bi_2teo_5晶体的能量转移和上转换

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Yb + Tm co-doped Bi_2TeO_5 single crystals were grown by the Czochralski method. Optical absorption and luminescence spectra of the crystals were determined and interpreted. The dynamics of the Tm and Yb excited states were followed by luminescence decay curves. Up-conversion processes were detected after 980 nm diode laser excitation, that resulted in an 800 nm and a weaker 475 nm emission corresponding to the ~3H_4 →~3H_6 and ~1G_4 →~3H_6 transitions of Tm~(3+). The excitation power dependence of the integrated intensity of the up-converted emission implied two-step excitation process including Yb-Tm energy transfer for the 800 nm emission, and three-photon excitation process for the 475 nm up-converted emission. Examination of absorption and emission spectra of Yb and Tm ions revealed that the consecutive energy transfer steps did not fulfill the resonance conditions, and they have to be assisted by phonon emission.

机译：Yb + Tm共掺杂Bi_2TeO_5单晶通过Czochralski方法生长。确定并解释了晶体的光吸收和发光光谱。 Tm和Yb激发态的动力学遵循发光衰减曲线。在980 nm二极管激光器激发后检测到上转换过程，这导致800 nm和475 nm较弱的发射，对应于Tm〜（3+）的〜3H_4→〜3H_6和〜1G_4→〜3H_6跃迁。上转换发射的积分强度对激发功率的依赖性意味着两步激发过程，包括用于800 nm发射的Yb-Tm能量转移和用于475 nm上转换发射的三光子激发过程。对Yb和Tm离子的吸收和发射光谱的研究表明，连续的能量转移步骤不满足共振条件，必须通过声子发射来辅助。

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来源
《Optical Materials》 |2008年第2期|p.306-310|共5页
作者
R. Lisiecki; G. Dominiak-Dzik; W. Ryba-Romanowski; I. Foeldvari; A. Peter;
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作者单位

Institute of Low Temperature and Structure Research Polish Academy of Sciences Wroclaw Poland;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类工程材料学;
关键词
diode-pumped lasers; laser spectroscopy;

机译：二极管泵浦激光器;激光光谱;

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Energy Transfer And Up-conversion In Bi_2teo_5 Crystals Co-doped With Yb~(3+) And Tm~(3+)

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