White emission of lithium ytterbium tetraphosphate nanocrystals

被引：86

作者：

Strek, W. ^{[1
]}

Marciniak, L. ^{[1
]}

Bednarkiewicz, A. ^{[1
]}

Lukowiak, A. ^{[1
]}

Wiglusz, R. ^{[1
]}

Hreniak, D. ^{[1
]}

机构：

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

来源：

OPTICS EXPRESS | 2011年 / 19卷 / 15期

关键词：

AVALANCHE UP-CONVERSION; PHOTON AVALANCHE; ENERGY-TRANSFER; LIGHT EMISSION; LUMINESCENCE; FLUORESCENCE; YB3AL5O12; IONS; TB3+;

D O I：

10.1364/OE.19.014083

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An efficient anti-Stokes white broadband emission induced by 976 nm laser diode in lithium ytterbium tetraphosphate (LiYbP4O12) nanocrystals was investigated. The emission occurs at room temperature and atmospheric pressure. Its intensity demonstrates an evident threshold dependence on the temperature and excitation density characteristic to avalanche process. The white emission is accompanied by very efficient photoconductivity characterized by microampere photocurrent which increases with the fourth order of applied incident light power (similar to P-4). We show that this emission is critically dependent on temperature and increases significantly in vacuum. It is concluded that the anti-Stokes white emission is associated with the Yb3+-CT luminescence. (C) 2011 Optical Society of Aamerica

引用

页码：14083 / 14092

页数：10

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