ThuliumV1, Pascal, Checkpoint, bibRecord, 001300

Sensitizing effect of Tm3+ on 2.9 μm emission from Dy3+-doped Ge25Ga5S70 glass

Identifieur interne : 001300 ( Pascal/Checkpoint ); précédent : 001299; suivant : 001301

Sensitizing effect of Tm3+ on 2.9 μm emission from Dy3+-doped Ge25Ga5S70 glass

Auteurs : J. Heo [Corée du Sud] ; W. Y. Cho [Corée du Sud] ; W. J. Chung [Corée du Sud]

Source :

Journal of non-crystalline solids [ 0022-3093 ] ; 1997.

RBID : Pascal:97-0326175

Descripteurs français

Pascal (Inist)
- Photoluminescence, Fluorescence, Matériau dopé, Codopage, Addition dysprosium, Addition thulium, Transfert énergie, Durée vie, Transition niveau énergie, Recouvrement raie spectrale, Déclin luminescence, Paire accepteur donneur, Etude expérimentale, Verre chalcogénure, Composé ternaire, Germanium sulfure, Gallium sulfure, 7855H, Ge25Ga5S70:Dy Tm, Ga Ge S.

English descriptors

KwdEn :
- Acceptor donor pair, Chalcogenide glasses, Codoping, Doped materials, Dysprosium additions, Energy transfer, Energy-level transitions, Experimental study, Fluorescence, Gallium sulfides, Germanium sulfides, Lifetime, Luminescence decay, Photoluminescence, Spectral line overlapping, Ternary compounds, Thulium additions.

Abstract

Copyright (c) 1997 Elsevier Science B.V. All rights reserved. Energy transfer mechanisms and the effect of Tm³⁺ addition on the intensity of the Dy³⁺:2.9 μm emission from Ge₂₅Ga₅S₇₀ glass were investigated. Intensity of the 2.9 μm fluorescence from Dy³⁺ increased with increasing Tm³⁺ content when the Dy³⁺ concentration remained constant, which indicates the presence of an efficient energy transfer between Tm³⁺ and Dy³⁺. A decrease in the measured lifetimes of the Tm³⁺:³F₄ level and a wide spectral overlap between the Tm³⁺:1.8 μm emission and the absorption of Dy³⁺:⁶H_15/2→⁶H_11/2 also supported the proposed energy transfer scheme. Analyses of the emission intensities and decay times suggested that a direct energy transfer from the Tm³⁺:³F₄ level to Dy³⁺:⁶H_11/2 level occurred after a fast diffusion-limited migration of the excitation energy among Tm³⁺.

Affiliations:

Corée du Sud

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Le document en format XML

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 on 2.9 μm emission from Dy<sup>3+</sup>
-doped Ge<sub>25</sub>
Ga<sub>5</sub>
S<sub>70</sub>
 glass</title>
<author><name sortKey="Heo, J" sort="Heo, J" uniqKey="Heo J" first="J." last="Heo">J. Heo</name>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Sensitizing effect of Tm<sup>3+</sup>
 on 2.9 μm emission from Dy<sup>3+</sup>
-doped Ge<sub>25</sub>
Ga<sub>5</sub>
S<sub>70</sub>
 glass</title>
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<series><title level="j" type="main">Journal of non-crystalline solids</title>
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<term>Energy transfer</term>
<term>Energy-level transitions</term>
<term>Experimental study</term>
<term>Fluorescence</term>
<term>Gallium sulfides</term>
<term>Germanium sulfides</term>
<term>Lifetime</term>
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<term>Photoluminescence</term>
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<term>Thulium additions</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Photoluminescence</term>
<term>Fluorescence</term>
<term>Matériau dopé</term>
<term>Codopage</term>
<term>Addition dysprosium</term>
<term>Addition thulium</term>
<term>Transfert énergie</term>
<term>Durée vie</term>
<term>Transition niveau énergie</term>
<term>Recouvrement raie spectrale</term>
<term>Déclin luminescence</term>
<term>Paire accepteur donneur</term>
<term>Etude expérimentale</term>
<term>Verre chalcogénure</term>
<term>Composé ternaire</term>
<term>Germanium sulfure</term>
<term>Gallium sulfure</term>
<term>7855H</term>
<term>Ge25Ga5S70:Dy Tm</term>
<term>Ga Ge S</term>
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<front><div type="abstract" xml:lang="en">Copyright (c) 1997  Elsevier Science B.V. All rights reserved. Energy transfer mechanisms and the effect of Tm<sup>3+</sup>
 addition on the intensity of the Dy<sup>3+</sup>
:2.9 μm emission from Ge<sub>25</sub>
Ga<sub>5</sub>
S<sub>70</sub>
 glass were investigated. Intensity of the 2.9 μm fluorescence from Dy<sup>3+</sup>
 increased with increasing Tm<sup>3+</sup>
 content when the Dy<sup>3+</sup>
 concentration remained constant, which indicates the presence of an efficient energy transfer between Tm<sup>3+</sup>
 and Dy<sup>3+</sup>
. A decrease in the measured lifetimes of the Tm<sup>3+</sup>
:<sup>3</sup>
F<sub>4</sub>
 level and a wide spectral overlap between the Tm<sup>3+</sup>
:1.8 μm emission and the absorption of Dy<sup>3+</sup>
:<sup>6</sup>
H<sub>15/2</sub>
→<sup>6</sup>
H<sub>11/2</sub>
 also supported the proposed energy transfer scheme. Analyses of the emission intensities and decay times suggested that a direct energy transfer from the Tm<sup>3+</sup>
:<sup>3</sup>
F<sub>4</sub>
 level to Dy<sup>3+</sup>
:<sup>6</sup>
H<sub>11/2</sub>
 level occurred after a fast diffusion-limited migration of the excitation energy among Tm<sup>3+</sup>
.</div>
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<fC01 i1="01" l="ENG"><s0>Copyright (c) 1997  Elsevier Science B.V. All rights reserved. Energy transfer mechanisms and the effect of Tm<sup>3+</sup>
 addition on the intensity of the Dy<sup>3+</sup>
:2.9 μm emission from Ge<sub>25</sub>
Ga<sub>5</sub>
S<sub>70</sub>
 glass were investigated. Intensity of the 2.9 μm fluorescence from Dy<sup>3+</sup>
 increased with increasing Tm<sup>3+</sup>
 content when the Dy<sup>3+</sup>
 concentration remained constant, which indicates the presence of an efficient energy transfer between Tm<sup>3+</sup>
 and Dy<sup>3+</sup>
. A decrease in the measured lifetimes of the Tm<sup>3+</sup>
:<sup>3</sup>
F<sub>4</sub>
 level and a wide spectral overlap between the Tm<sup>3+</sup>
:1.8 μm emission and the absorption of Dy<sup>3+</sup>
:<sup>6</sup>
H<sub>15/2</sub>
→<sup>6</sup>
H<sub>11/2</sub>
 also supported the proposed energy transfer scheme. Analyses of the emission intensities and decay times suggested that a direct energy transfer from the Tm<sup>3+</sup>
:<sup>3</sup>
F<sub>4</sub>
 level to Dy<sup>3+</sup>
:<sup>6</sup>
H<sub>11/2</sub>
 level occurred after a fast diffusion-limited migration of the excitation energy among Tm<sup>3+</sup>
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<s5>05</s5>
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</country>
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</record>

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Sensitizing effect of Tm3+ on 2.9 μm emission from Dy3+-doped Ge25Ga5S70 glass

Sensitizing effect of Tm3+ on 2.9 μm emission from Dy3+-doped Ge25Ga5S70 glass

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