Upconversion and infrared luminescences in Er3+/Yb3+ codoped Y2O3 and (Y0.9La0.1)2O3 transparent ceramics

被引：45

作者：

Lu, Shenzhou ^{[1
]}

Yang, Qiuhong ^{[1
]}

Zhang, Bin ^{[1
]}

Zhang, Haojia ^{[1
]}

机构：

[1] Shanghai Univ, Sch Mat Sci & Engn, Shanghai 200072, Peoples R China

来源：

OPTICAL MATERIALS | 2011年 / 33卷 / 05期

关键词：

Er/Yb:Y2O3; Er/Yb:(Y0.9La0.1)2O3; Transparent ceramics; Nanopowders; Judd-Ofelt theory; Upconversion luminescence; SPECTROSCOPIC PROPERTIES; NANOCRYSTALLINE; EMISSION; INTENSITIES;

D O I：

10.1016/j.optmat.2010.10.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Er3+ and Yb3+ codoped Y2O3 and (Y0.9La0.1)(2)O-3 transparent ceramics were fabricated by the conventional ceramics processing with nanopowders. Compared to Er/Yb:Y2O3, Er/Yb:(Y0.9La0.1)(2)O-3 ceramics had higher transmittance. Intense upconversion (UC) and infrared emission (1543 nm) were observed under excitation of 980 nm. According to three intensity parameters Omega(2), Omega(4), and Omega(6) fitted by the Judd-Ofelt theory, the spectroscopic quality parameters (X), radiative lifetimes (tau(rad)) and emission cross-sections (alpha(em)) were determined. Er/Yb:(Y0.9La0.1)(2)O-3 ceramics owned broader peaks and longer lifetime (12.3 ms) at 1548 nm due to the glass-like structure of (Y0.9La0.1)(2)O-3 ceramics. The results showed Y2O3 and Y1.8La0.2O3 transparent ceramics are promising gain media for developing the solid-state 1.51 mu m optical amplifiers and tunable UC lasers.(C) 2010 Elsevier B.V. All rights reserved.

引用

页码：746 / 749

页数：4

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