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Spectroscopic study of floating zone technique-grown Nd3+-doped CaMoO4

Published online by Cambridge University Press:  30 August 2004

L. H.C. Andrade ,
D. Reyes Ardila ,
L. B. Barbosa ,
J. P. Andreeta ,
M. Siu Li ,
A. Brenier ,
Y. Guyot  and
G. Boulon
L. H.C. Andrade*
Affiliation:
Depto de Física, Universidade Estadual de Mato Grosso do Sul, Cidade Universitária de Dourados, Rodovia Dourados/Itahum Km 12 Zona Rural, CP 351, CEP 79804-970, Dourados, MS, Brasil
D. Reyes Ardila
Affiliation:
Depto de Física, Universidad de Santiago de Chile, 7254758, Santiago, Chile
L. B. Barbosa
Affiliation:
Instituto de Física de São Carlos, Departamento de Física e Ciência dos Materiais, Universidade de São Paulo, CP 369, CEP 13560-970, São Carlos, SP, Brasil
J. P. Andreeta
Affiliation:
Instituto de Física de São Carlos, Departamento de Física e Ciência dos Materiais, Universidade de São Paulo, CP 369, CEP 13560-970, São Carlos, SP, Brasil
M. Siu Li
Affiliation:
Instituto de Física de São Carlos, Departamento de Física e Ciência dos Materiais, Universidade de São Paulo, CP 369, CEP 13560-970, São Carlos, SP, Brasil
A. Brenier
Affiliation:
Laboratoire de Physico-Chimie des Matériaux Luminescents, Université Lyon 1, UMR 5620 du CNRS, 69622 Villeurbanne, France
Y. Guyot
Affiliation:
Laboratoire de Physico-Chimie des Matériaux Luminescents, Université Lyon 1, UMR 5620 du CNRS, 69622 Villeurbanne, France
G. Boulon
Affiliation:
Laboratoire de Physico-Chimie des Matériaux Luminescents, Université Lyon 1, UMR 5620 du CNRS, 69622 Villeurbanne, France
*
luishca@uems.br
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Abstract

Optical spectroscopy studies of Nd3+-doped scheelite calcium molybdate (CaMoO4) single crystal grown by a floating zone-like technique was performed using Judd-Ofelt analysis, besides luminescence data and lifetime measurements in the visible and near infrared domains. The excited state absorption in cross section units of this material was measured by two different methods for all expected infrared emission. By using calculated intensity parameters $\Omega _{t}$ (t=2, 4, 6), it were determined branching ratios, emission cross-sections, and lifetimes for all related transitions. The observed single excited state absorption calibrated in absorption cross-section units was found too small to disturb the laser efficiency in the 1030–1100 nm spectral range. A comparison of main spectroscopic parameters of this material with those of other Nd3+-doped crystals is presented.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 29 , Issue 1 , January 2005 , pp. 55 - 64
Copyright
© EDP Sciences, 2005

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