ThuliumV1, Main, Exploration, bibRecord, 000644

Laser ceramics Tm:Lu2O3. Thermal, thermo-optical, and spectroscopic properties

Identifieur interne : 000644 ( Main/Exploration ); précédent : 000643; suivant : 000645

Laser ceramics Tm:Lu2O3. Thermal, thermo-optical, and spectroscopic properties

Auteurs : E. V. Ivakin [Biélorussie] ; I. G. Kisialiou [Biélorussie] ; O. L. Antipov [Russie]

Source :

Optical materials : (Amsterdam) [ 0925-3467 ] ; 2013.

RBID : Pascal:13-0117055

Descripteurs français

Pascal (Inist)
- Luminescence, Effet thermooptique, Laser pulsé, Méthode mesure, Diffusivité thermique, Durée vie, Indice réfraction, Coefficient absorption, Propriété thermique, Etat métastable, Matériau optique, Matériau dopé, Matériau laser, Céramique, Addition thulium, Oxyde de lutétium, 4270H, 7820N, Réseau transitoire.
Wicri :
- topic : Céramique.

English descriptors

KwdEn :
- Absorption coefficients, Ceramics, Doped materials, Laser materials, Lifetime, Luminescence, Lutetium oxides, Measuring methods, Metastable states, Optical materials, Pulsed lasers, Refractive index, Thermal diffusivity, Thermal properties, Thermo-optical effects, Thulium additions, Transient gratings.

Abstract

In this paper we report the measurements of in-plane thermal diffusivity, lifetime of metastable level ³F₄, thermal coefficients of linear expansion and refractive index change of laser ceramics Tm(2 at.%):Lu₂O₃ by the transient grating technique. The wavelengths 213, 266, 355 and 796 nm from pulsed lasers were chosen for sample excitation in accordance with the desire to measure particular parameters. The experimentally determined thermal diffusivity 0.05 cm²/s was attributed to subsurface layer, which has thickness of order of grating period. The applied approach ensured more reliable measurement of lifetime of metastable ³F₄ level as compared to the conventional luminescence detection. The dynamic value of linear expansion coefficient was measured under sample excitation at 213 nm and was found to be close to that as measured elsewhere in static regime. Coefficient of refraction index change was found to be as high as 2 x 10^-5 K^-1. The value of absorption coefficient of ceramics at 213 nm was estimated by excitation of acoustic grating in a thin layer of air adjacent to the sample surface. After the estimation, it exceeded 10⁴ cm^-1.

Affiliations:

Biélorussie, Russie

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Le document en format XML

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. Thermal, thermo-optical, and spectroscopic properties</title>
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. Thermal, thermo-optical, and spectroscopic properties</title>
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<term>Measuring methods</term>
<term>Metastable states</term>
<term>Optical materials</term>
<term>Pulsed lasers</term>
<term>Refractive index</term>
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<term>Diffusivité thermique</term>
<term>Durée vie</term>
<term>Indice réfraction</term>
<term>Coefficient absorption</term>
<term>Propriété thermique</term>
<term>Etat métastable</term>
<term>Matériau optique</term>
<term>Matériau dopé</term>
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<term>Céramique</term>
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<term>7820N</term>
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<front><div type="abstract" xml:lang="en">In this paper we report the measurements of in-plane thermal diffusivity, lifetime of metastable level <sup>3</sup>
F<sub>4</sub>
, thermal coefficients of linear expansion and refractive index change of laser ceramics Tm(2 at.%):Lu<sub>2</sub>
O<sub>3</sub>
 by the transient grating technique. The wavelengths 213, 266, 355 and 796 nm from pulsed lasers were chosen for sample excitation in accordance with the desire to measure particular parameters. The experimentally determined thermal diffusivity 0.05 cm<sup>2</sup>
/s was attributed to subsurface layer, which has thickness of order of grating period. The applied approach ensured more reliable measurement of lifetime of metastable <sup>3</sup>
F<sub>4</sub>
 level as compared to the conventional luminescence detection. The dynamic value of linear expansion coefficient was measured under sample excitation at 213 nm and was found to be close to that as measured elsewhere in static regime. Coefficient of refraction index change was found to be as high as 2 x 10<sup>-5</sup>
 K<sup>-1</sup>
. The value of absorption coefficient of ceramics at 213 nm was estimated by excitation of acoustic grating in a thin layer of air adjacent to the sample surface. After the estimation, it exceeded 10<sup>4</sup>
 cm<sup>-1</sup>
.</div>
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Laser ceramics Tm:Lu2O3. Thermal, thermo-optical, and spectroscopic properties

Laser ceramics Tm:Lu2O3. Thermal, thermo-optical, and spectroscopic properties

Source :

Descripteurs français

English descriptors

Abstract

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Pour mettre un lien sur cette page dans le réseau Wicri