White emission of lithium ytterbium tetraphosphate nanocrystals

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 temperatu...

Full description

Saved in:
Bibliographic Details
Published inOptics express Vol. 19; no. 15; pp. 14083 - 14092
Main Authors Strek, W, Marciniak, L, Bednarkiewicz, A, Lukowiak, A, Wiglusz, R, Hreniak, D
Format Journal Article
LanguageEnglish
Published United States 18.07.2011
Online AccessGet full text

Cover

More Information
Summary: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 (~P4). 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 theYb3+- CT luminescence.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1094-4087
1094-4087
DOI:10.1364/oe.19.014083