Absolute quantum cutting efficiency of Tb3+-Yb3+ co-doped glass

被引：11

作者：

Duan, Qianqian ^{[1
]}

Qin, Feng ^{[1
,2
]}

Zhao, Hua ^{[3
]}

Zhang, Zhiguo ^{[1
,2
]}

Cao, Wenwu ^{[1
,2
,4
]}

机构：

[1] Harbin Inst Technol, Condensed Matter Sci & Technol Inst, Harbin 150001, Peoples R China

[2] Harbin Inst Technol, Lab Sono & Phototheranost Technol, Harbin 150001, Peoples R China

[3] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China

[4] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2013年 / 114卷 / 21期

关键词：

DOWN-CONVERSION; PERFORMANCE; LAYERS;

D O I：

10.1063/1.4838435

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The absolute quantum cutting efficiency of Tb3+-Yb3+ co-doped glass was quantitatively measured by an integrating sphere detection system, which is independent of the excitation power. As the Yb3+ concentration increases, the near infrared quantum efficiency exhibited an exponential growth with an upper limit of 13.5%, but the visible light efficiency was reduced rapidly. As a result, the total quantum efficiency monotonically decreases rather than increases as theory predicted. In fact, the absolute quantum efficiency was far less than the theoretical value due to the low radiative efficiency of Tb3(+) (<61%) and significant cross-relaxation nonradiative loss between Yb3+ ions. (C) 2013 AIP Publishing LLC.

引用

页数：4

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