ThuliumV1, Main, Exploration, bibRecord, 002A79

Room temperature blue upconverted luminescence via photon avalanche pumping in Cs2NaGdCl6:Tm3+

Identifieur interne : 002A79 ( Main/Exploration ); précédent : 002A78; suivant : 002A80

Room temperature blue upconverted luminescence via photon avalanche pumping in Cs2NaGdCl6:Tm3+

Auteurs : M. F. Joubert [France] ; S. Guy [France] ; S. Cuerq [France] ; P. A. Tanner [Hong Kong]

Source :

Journal of luminescence [ 0022-2313 ] ; 1997.

RBID : Pascal:98-0037189

Descripteurs français

Pascal (Inist)
- Photoluminescence, Matériau dopé, Addition thulium, Pompage optique, Avalanche, Spectre excitation, Conversion fréquence, Spectre absorption, Etat excité, Dépendance temps, Durée vie, Césium chlorure, Sodium chlorure, Gadolinium chlorure, Composé quaternaire, Etude expérimentale, 7855H, Cs2NaGdCl6:Tm, Cs Cl Gd Na, Conversion vers fréquence supérieure.

English descriptors

KwdEn :
- Absorption spectra, Avalanche, Cesium chlorides, Doped materials, Excitation spectrum, Excited states, Experimental study, Frequency conversion, Gadolinium chlorides, Lifetime, Optical pumping, Photoluminescence, Quaternary compounds, Sodium chlorides, Thulium additions, Time dependence, Upconversion.

Abstract

Copyright (c) 1997 Elsevier Science B.V. All rights reserved. Experimental results are presented to show that the intense, blue upconverted luminescence observed from Cs₂NaGdCl₆ doped with 6, 10 and 15 at.% Tm³⁺, when excited by a cw laser near 650 nm at room temperature, is due to a photon avalanche process. A slow rise of the upconverted blue-emission intensity, over several seconds, takes place near the threshold power level. Emission is not only observed from the ¹G₄ term manifold, but also from ¹D₂. The well-resolved upconversion excitation spectrum indicates clearly that excited-state absorption to ¹G₄ takes place from the ³F₄ multiplet term of Tm³⁺.

Affiliations:

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Le document en format XML

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NaGdCl<sub>6</sub>
:Tm<sup>3+</sup>
</title>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Room temperature blue upconverted luminescence via photon avalanche pumping in Cs<sub>2</sub>
NaGdCl<sub>6</sub>
:Tm<sup>3+</sup>
</title>
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</author>
<author><name sortKey="Cuerq, S" sort="Cuerq, S" uniqKey="Cuerq S" first="S." last="Cuerq">S. Cuerq</name>
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<series><title level="j" type="main">Journal of luminescence</title>
<title level="j" type="abbreviated">J. lumin.</title>
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<term>Doped materials</term>
<term>Excitation spectrum</term>
<term>Excited states</term>
<term>Experimental study</term>
<term>Frequency conversion</term>
<term>Gadolinium chlorides</term>
<term>Lifetime</term>
<term>Optical pumping</term>
<term>Photoluminescence</term>
<term>Quaternary compounds</term>
<term>Sodium chlorides</term>
<term>Thulium additions</term>
<term>Time dependence</term>
<term>Upconversion</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Photoluminescence</term>
<term>Matériau dopé</term>
<term>Addition thulium</term>
<term>Pompage optique</term>
<term>Avalanche</term>
<term>Spectre excitation</term>
<term>Conversion fréquence</term>
<term>Spectre absorption</term>
<term>Etat excité</term>
<term>Dépendance temps</term>
<term>Durée vie</term>
<term>Césium chlorure</term>
<term>Sodium chlorure</term>
<term>Gadolinium chlorure</term>
<term>Composé quaternaire</term>
<term>Etude expérimentale</term>
<term>7855H</term>
<term>Cs2NaGdCl6:Tm</term>
<term>Cs Cl Gd Na</term>
<term>Conversion vers fréquence supérieure</term>
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<front><div type="abstract" xml:lang="en">Copyright (c) 1997  Elsevier Science B.V. All rights reserved. Experimental results are presented to show that the intense, blue upconverted luminescence observed from Cs<sub>2</sub>
NaGdCl<sub>6</sub>
 doped with 6, 10 and 15 at.% Tm<sup>3+</sup>
, when excited by a cw laser near 650 nm at room temperature, is due to a photon avalanche process. A slow rise of the upconverted blue-emission intensity, over several seconds, takes place near the threshold power level. Emission is not only observed from the <sup>1</sup>
G<sub>4</sub>
 term manifold, but also from <sup>1</sup>
D<sub>2</sub>
. The well-resolved upconversion excitation spectrum indicates clearly that excited-state absorption to <sup>1</sup>
G<sub>4</sub>
 takes place from the <sup>3</sup>
F<sub>4</sub>
 multiplet term of Tm<sup>3+</sup>
.</div>
</front>
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Room temperature blue upconverted luminescence via photon avalanche pumping in Cs2NaGdCl6:Tm3+

Room temperature blue upconverted luminescence via photon avalanche pumping in Cs2NaGdCl6:Tm3+

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