NEODYMIUM CONCENTRATION-DEPENDENCE OF THERMOOPTICAL PROPERTIES IN LOWSILICA CALCIUM ALUMINATE GLASSES

Authors
BAESSO ML BENTO AC ANDRADE AA CATUNDA T SAMPAIO JA GAMA S
Citation
Ml. Baesso et al., NEODYMIUM CONCENTRATION-DEPENDENCE OF THERMOOPTICAL PROPERTIES IN LOWSILICA CALCIUM ALUMINATE GLASSES, Journal of non-crystalline solids, 219, 1997, pp. 165-169
Citations number
19
Categorie Soggetti
Material Science, Ceramics
Journal title
Journal of non-crystalline solids → ACNP
ISSN journal
00223093
Volume
219
Year of publication
1997
Pages
165 - 169
Database
ISI
SICI code
0022-3093(1997)219:<165:NCOTPI>2.0.ZU;2-L
Abstract
Thermal lens spectrometry of thermo-optical properties of low silica c alcium aluminate glasses doped with different concentration of neodymi um dioxide was conducted. Thermal lens signal amplitude presented a li near dependence for neodymium concentrations up to 2.0 wt%, indicating that there was no fluorescence quenching. The quantitative treatment for the thermal lens effect also allowed determination of the absolute value of quantum efficiency, 0.87, for all samples. Thermal diffusivi ty is around 5.5 X 10(-3) cm(2)/s with some dependence on Nd concentra tion. (C) 1997 Elsevier Science B.V.