Blue cooperative luminescence in Yb3+-doped tellurite glasses excited at 1.064 μm

被引：47

作者：

dos Santos, PV ^{[1
]}

Vermelho, MVD

Gouveia, EA

de Araújo, MT

Gouveia-Neto, AS

Cassanjes, FC

Ribeiro, SJL

Messaddeq, Y

机构：

[1] Univ Fed Alagoas, Dept Fis, BR-57072970 Maceio, AL, Brazil

[2] UNESP, Inst Quim, BR-14800900 Araraquara, SP, Brazil

来源：

JOURNAL OF CHEMICAL PHYSICS | 2002年 / 116卷 / 15期

关键词：

D O I：

10.1063/1.1463397

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Blue luminescence emission around 480 nm through cooperative upconversion from pairs of Yb3+ ions implanted into 60TeO(2)-10GeO(2)-10K(2)O-10Li(2)O-10Nb(2)O(5) tellurite glasses and excited by a cw laser at 1.064 mum is demonstrated. Cooperative luminescence emission enhancement owing to the temperature dependent multiphonon-assisted anti-Stokes excitation process of the ytterbium ions is also observed. The experimental results revealed a fourfold enhancement in the cooperative luminescence emission when the sample was heated in the temperature range of 20 degreesC-260 degreesC. The thermally induced enhancement is assigned to the effective absorption cross-section for the ytterbium ions which is an increasing function of the medium temperature. (C) 2002 American Institute of Physics.

引用

页码：6772 / 6776

页数：5

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