期刊
OPTICAL MATERIALS
卷 24, 期 1-2, 页码 275-279出版社
ELSEVIER
DOI: 10.1016/S0925-3467(03)00134-4
关键词
Yb3+; charge transfer luminescence; garnet; single crystal growth from the melt
Single crystal of heavily Yb3+-doped Lu3Al5O12 (Yb:LuAG) were grown by the micro-pulling-down method. Radio- and photoluminescence spectra of the Yb:LuAG were studied. Two bands peaking round 340-350 and 480-500 nm could be ascribed to charge transfer (CT) luminescence of Yb3+, as their position nearly coincide with the Yb3+-related CT emission in YAG matrix. The highest emission intensity was observed for Yb concentration of 5% with respect to the Lu site. Temperature dependence of photoluminescence spectra of the Yb: LuAG (5%) was measured and points to remarkable thermal quenching above liquid nitrogen temperature. (C) 2003 Elsevier B.V. All rights reserved.
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