Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5399255 | Journal of Luminescence | 2016 | 16 Pages |
Abstract
This work studies the thermal properties of a glass matrix called PZABP doped with ZnTe and co-doped with Yb3+ with nominal composition 60P2O5, 15ZnO, 5Al2O3, 10BaO, and 10 PbO (mol%). The presence of ZnTe results in the formation of nanocrystals which are evidenced by optical absorption, X-Ray Diffraction (XRD) and Raman scattering. Thermal lens and Volumetric Heat Capacity techniques were used to investigate thermal diffusivity (D), thermal conductivity (K) and optical path variation with temperature (ds/dT). The outcomes indicate high values for the thermal diffusivity and a relatively small thermal conductivity, i.e., around 2.6Ã10â3Â cm2/s and 3.4Ã10â3Â WÂ cmâ1Â Kâ1, respectively. On the other hand, a low ds/dT value, 1.0Ã10â6Â Kâ1, was obtained as required for an active laser medium. Moreover, it has been observed that the matrix allows high concentration of dopants without compromising its thermal properties. As a result, PZABP glasses may be pointed out as a promising material to applications in high power photonics devices.
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
A.M. Freitas, M.J.V. Bell, V. Anjos, A.S. Pinheiro, N.O. Dantas,