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Proceedings Paper

Thermal-lens measurements of thermal diffusivity temperature dependence up to the glass transition in a fluoride glass
Author(s): S. M. Lima; Tomaz Catunda; R. Lebullenger; Antonio Carlos Hernandes; Mauro L. Baesso; A. C. Bento
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Paper Abstract

The time-resolved mode-mismatched thermal lens technique has been used to determine the thermal diffusivity, D, temperature behavior of a fluoride glass (ZBLAN) from 25 to 315 degree(s)C. We observed an abrupt decrease on D with minimum at 298 degree(s)C which coincides with the glass transition temperature Tg value measured by DSC. These measurements indicate that the thermal conductivity, K, decrease by factor approximately 8.

Paper Details

Date Published: 19 July 1999
PDF: 2 pages
Proc. SPIE 3749, 18th Congress of the International Commission for Optics, (19 July 1999); doi: 10.1117/12.354792
Show Author Affiliations
S. M. Lima, Univ. of Sao Paulo (Brazil)
Tomaz Catunda, Univ. of Sao Paulo (Brazil)
R. Lebullenger, Univ. of Sao Paulo (Brazil)
Antonio Carlos Hernandes, Univ. of Sao Paulo (Brazil)
Mauro L. Baesso, Univ. Estadual de Maringa (Brazil)
A. C. Bento, Univ. Estadual de Maringa (Brazil)

Published in SPIE Proceedings Vol. 3749:
18th Congress of the International Commission for Optics
Alexander J. Glass; Joseph W. Goodman; Milton Chang; Arthur H. Guenther; Toshimitsu Asakura, Editor(s)

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