Hot emission in Nd3+/Yb3+:YAG nanocrystalline ceramics

被引：17

作者：

Bednarkiewicz, A ^{[1
]}

Hreniak, D ^{[1
]}

Deren, P ^{[1
]}

Strek, W ^{[1
]}

机构：

[1] Polish Acad Sci, Inst Low Temp & Struct Res, PL-50950 Wroclaw, Poland

来源：

JOURNAL OF LUMINESCENCE | 2003年 / 102卷

关键词：

Nd/Yb : YAG nanocrystalline ceramics; hot emission; optical properties;

D O I：

10.1016/S0022-2313(02)00585-9

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A visible emission of Nd3+ in the double doped Nd/Yb:YAG nanocrystalline ceramics was observed under intense CW excitation by 976 nm laser diode. The observed emission is assigned by us to hot emission and it strongly increased with temperature. Its intensity exhibited long emission build-up times (of an order of seconds) after turning on the excitation source. The intensities of hot emission of Nd3+ ion increased with the excitation power demonstrating the I-N dependence. It was found that N was proportionally dependent on the energy distance DeltaE = E-em(hot) - E(F-4(3/2)). The effect of Yb3+ concentration on hot emission intensity was also noticed. No Nd3+ emission from F-4(3/2) level under indirect 976 nm excitation was observed. The mechanisms leading to the visible hot emission in Nd/Yb:YAG nanocrystalline ceramics are discussed. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：438 / 444

页数：7

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