ThuliumV1, Main, Exploration, bibRecord, 001401

Highly efficient upconversion emission and luminescence switching from Yb3+/Tm3+ co-doped water-free low silica calcium aluminosilicate glass

Identifieur interne : 001401 ( Main/Exploration ); précédent : 001400; suivant : 001402

Highly efficient upconversion emission and luminescence switching from Yb3+/Tm3+ co-doped water-free low silica calcium aluminosilicate glass

Auteurs : W. F. Silva [Brésil] ; F. G. Rego-Filho [Brésil] ; M. T. De Araujo [Brésil] ; E. A. Gouveia [Brésil] ; M. V. D. Vermelho [Brésil] ; P. T. Udo [Brésil] ; N. G. C. Astrath [Brésil] ; M. L. Baesso [Brésil] ; C. Jacinto [Brésil]

Source :

Journal of luminescence [ 0022-2313 ] ; 2008.

RBID : Pascal:08-0285225

Descripteurs français

Pascal (Inist)
- Photoluminescence, Transition niveau énergie, Codopage, Conversion fréquence, Intensité excitation, Equation vitesse, Transfert énergie, Addition ytterbium, Addition thulium, Verre aluminosilicate.

English descriptors

KwdEn :
- Aluminosilicate glass, Codoping, Energy transfer, Energy-level transitions, Excitation intensity, Frequency conversion, Photoluminescence, Rate equation, Thulium additions, Ytterbium additions.

Abstract

We present highly efficient 480 and 800 nm upconversion emissions in Tm³⁺/Yb³⁺ co-doped water-free low silica calcium aluminosilicate glass under excitation at 976 nm. As a result of this efficient upconversion process, a luminescent switching with the excitation intensity has been observed. The switching is explained and discussed using rate equations analysis and saturation effects. By means of fitting of the experimental data point, it was possible to obtain the value of the energy transfer parameter related to the transition ²F_5/2, ³H₄→²F_7/2, ¹G₄. The value of this parameter is higher than that of materials like YLF. This switching mechanism could be used in the development of sensors and networks for optical processing and optical communications.

Affiliations:

Links toward previous steps (curation, corpus...)

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Le document en format XML

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 co-doped water-free low silica calcium aluminosilicate glass</title>
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 co-doped water-free low silica calcium aluminosilicate glass</title>
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<series><title level="j" type="main">Journal of luminescence</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aluminosilicate glass</term>
<term>Codoping</term>
<term>Energy transfer</term>
<term>Energy-level transitions</term>
<term>Excitation intensity</term>
<term>Frequency conversion</term>
<term>Photoluminescence</term>
<term>Rate equation</term>
<term>Thulium additions</term>
<term>Ytterbium additions</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Photoluminescence</term>
<term>Transition niveau énergie</term>
<term>Codopage</term>
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<term>Intensité excitation</term>
<term>Equation vitesse</term>
<term>Transfert énergie</term>
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<term>Addition thulium</term>
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<front><div type="abstract" xml:lang="en">We present highly efficient 480 and 800 nm upconversion emissions in Tm<sup>3+</sup>
/Yb<sup>3+</sup>
 co-doped water-free low silica calcium aluminosilicate glass under excitation at 976 nm. As a result of this efficient upconversion process, a luminescent switching with the excitation intensity has been observed. The switching is explained and discussed using rate equations analysis and saturation effects. By means of fitting of the experimental data point, it was possible to obtain the value of the energy transfer parameter related to the transition <sup>2</sup>
F<sub>5/2</sub>
, <sup>3</sup>
H<sub>4</sub>
→<sup>2</sup>
F<sub>7/2</sub>
, <sup>1</sup>
G<sub>4</sub>
. The value of this parameter is higher than that of materials like YLF. This switching mechanism could be used in the development of sensors and networks for optical processing and optical communications.</div>
</front>
</TEI>
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</record>

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Highly efficient upconversion emission and luminescence switching from Yb3+/Tm3+ co-doped water-free low silica calcium aluminosilicate glass

Highly efficient upconversion emission and luminescence switching from Yb3+/Tm3+ co-doped water-free low silica calcium aluminosilicate glass

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri