ThuliumV1, Main, Exploration, bibRecord, 001570

Thulium doped monoclinic KLu(WO4)2 single crystals : growth and spectroscopy

Identifieur interne : 001570 ( Main/Exploration ); précédent : 001569; suivant : 001571

Thulium doped monoclinic KLu(WO4)2 single crystals : growth and spectroscopy

Auteurs : O. Silvestre [Espagne] ; M. C. Pujol [Espagne] ; M. Rico [Espagne] ; F. Guell [Espagne] ; M. Aguilo [Espagne] ; F. Diaz [Espagne]

Source :

Applied physics. B, Lasers and optics : (Print) [ 0946-2171 ] ; 2007.

RBID : Pascal:07-0317407

Descripteurs français

Pascal (Inist)
- Photoluminescence, Laser solide, Croissance cristalline en solution, Effet concentration, Niveau énergie, Structure cristalline, Spectre absorption, Monocristal, Poudre, Matériau dopé, Matériau optique, Matériau laser, Addition thulium, Thulium, Composé quaternaire, 4270H, KLu(WO4):Tl, K Lu O W, 7855H, 4255R.

English descriptors

KwdEn :
- Absorption spectra, Crystal growth from solutions, Crystal structure, Doped materials, Energy levels, Laser materials, Monocrystals, Optical materials, Photoluminescence, Powders, Quantity ratio, Quaternary compounds, Solid state lasers, Thulium, Thulium additions.

Abstract

This paper presents the crystal growth and optical characterization of thulium-doped KLu(WO4)2 (KLuW). Thulium-doped KLuW macrodefect-free monoclinic single crystals (a* x b x c ≃ 10 x 7 x 15 mm³) were grown by the top seeded solution growth slow cooling method with dopant concentrations of 0.5%, 1%, 3% and 5% atomic in solution. The evolution of unit cell parameters in relation with thulium doping was studied by X-ray powder patterns. Thulium energy levels in the KLuW host were determined by 6 K polarized optical absorption. The Judd-Ofelt parameters determined were Ω₂ = 9.01 x 10^-20 cm², Ω₄ = 1.36 x 10^-20 cm² and Ω₆ = 1.43 x 10-²⁰cm². The maximum emission cross section for the 1.9 μm emission, calculated by Füchtbauer-Ladenburg method, is 1.75 x 10^-20 cm², at 1845 nm with E//N_m. The intensity decay time from the emitting levels ¹G₄ and ³H₄ levels in relation to the concentration were studied. For the lowest thulium concentration, the measured decay times from ¹G₄and ³H₄ emitting levels are 140 μs and 230 μs, respectively.

Affiliations:

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Le document en format XML

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<seriesStmt><title level="j" type="main">Applied physics. B, Lasers and optics : (Print)</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Absorption spectra</term>
<term>Crystal growth from solutions</term>
<term>Crystal structure</term>
<term>Doped materials</term>
<term>Energy levels</term>
<term>Laser materials</term>
<term>Monocrystals</term>
<term>Optical materials</term>
<term>Photoluminescence</term>
<term>Powders</term>
<term>Quantity ratio</term>
<term>Quaternary compounds</term>
<term>Solid state lasers</term>
<term>Thulium</term>
<term>Thulium additions</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Photoluminescence</term>
<term>Laser solide</term>
<term>Croissance cristalline en solution</term>
<term>Effet concentration</term>
<term>Niveau énergie</term>
<term>Structure cristalline</term>
<term>Spectre absorption</term>
<term>Monocristal</term>
<term>Poudre</term>
<term>Matériau dopé</term>
<term>Matériau optique</term>
<term>Matériau laser</term>
<term>Addition thulium</term>
<term>Thulium</term>
<term>Composé quaternaire</term>
<term>4270H</term>
<term>KLu(WO4):Tl</term>
<term>K Lu O W</term>
<term>7855H</term>
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<front><div type="abstract" xml:lang="en">This paper presents the crystal growth and optical characterization of thulium-doped KLu(WO4)2 (KLuW). Thulium-doped KLuW macrodefect-free monoclinic single crystals (a* x b x c ≃ 10 x 7 x 15 mm<sup>3</sup>
) were grown by the top seeded solution growth slow cooling method with dopant concentrations of 0.5%, 1%, 3% and 5% atomic in solution. The evolution of unit cell parameters in relation with thulium doping was studied by X-ray powder patterns. Thulium energy levels in the KLuW host were determined by 6 K polarized optical absorption. The Judd-Ofelt parameters determined were Ω<sub>2</sub>
 = 9.01 x 10<sup>-20</sup>
 cm<sup>2</sup>
, Ω<sub>4</sub>
 = 1.36 x 10<sup>-20</sup>
 cm<sup>2</sup>
 and Ω<sub>6</sub>
 = 1.43 x 10-<sup>20</sup>
cm<sup>2</sup>
. The maximum emission cross section for the 1.9 μm emission, calculated by Füchtbauer-Ladenburg method, is 1.75 x 10<sup>-20</sup>
 cm<sup>2</sup>
, at 1845 nm with E//N<sub>m</sub>
. The intensity decay time from the emitting levels <sup>1</sup>
G<sub>4</sub>
 and <sup>3</sup>
H<sub>4</sub>
 levels in relation to the concentration were studied. For the lowest thulium concentration, the measured decay times from <sup>1</sup>
G<sub>4</sub>
and <sup>3</sup>
H<sub>4</sub>
 emitting levels are 140 μs and 230 μs, respectively.</div>
</front>
</TEI>
<affiliations><list><country><li>Espagne</li>
</country>
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<li>Communauté de Madrid</li>
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<tree><country name="Espagne"><region name="Catalogne"><name sortKey="Silvestre, O" sort="Silvestre, O" uniqKey="Silvestre O" first="O." last="Silvestre">O. Silvestre</name>
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<name sortKey="Aguilo, M" sort="Aguilo, M" uniqKey="Aguilo M" first="M." last="Aguilo">M. Aguilo</name>
<name sortKey="Diaz, F" sort="Diaz, F" uniqKey="Diaz F" first="F." last="Diaz">F. Diaz</name>
<name sortKey="Guell, F" sort="Guell, F" uniqKey="Guell F" first="F." last="Guell">F. Guell</name>
<name sortKey="Pujol, M C" sort="Pujol, M C" uniqKey="Pujol M" first="M. C." last="Pujol">M. C. Pujol</name>
<name sortKey="Rico, M" sort="Rico, M" uniqKey="Rico M" first="M." last="Rico">M. Rico</name>
</country>
</tree>
</affiliations>
</record>

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Thulium doped monoclinic KLu(WO4)2 single crystals : growth and spectroscopy

Thulium doped monoclinic KLu(WO4)2 single crystals : growth and spectroscopy

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