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Proceedings Paper

Thermal conductivity of garnet laser crystals
Author(s): B. S. Wang; H. H. Jiang; Q. L. Zhang; S. T. Yin
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Paper Abstract

The thermal conductivities of nine different synthetic garnet laser crystals at various temperatures, range from 273 to 393 K have been investigated by instantaneous measurement method. The results show that the thermal conductivity of each crystal decreases exponentially with the temperature increasing. It is notable that, different host crystals, such as YAG, GGG, and GSGG have different thermal conductivity, which is attributed to the crucial influence of crystal structure and composition on the absolute value of their thermal conductivity. Moreover, with respect to the same host crystals, the impurity scattering also results in the change of their thermal conductivities. This is because that a higher concentration of doped ions leads to a more phonon scattering modes, which results in a shorter mean free path of the phonons and a lower thermal conductivity. In addition, different host crystals have various dependences of thermal conductivity on dopant concentration. This works provides reliable and useful information for designing high power, high quality, and high stability laser devices.

Paper Details

Date Published: 6 February 2008
PDF: 9 pages
Proc. SPIE 6823, High-Power Lasers and Applications IV, 68231P (6 February 2008); doi: 10.1117/12.754783
Show Author Affiliations
B. S. Wang, Anhui Institute of Optics and Fine Mechanics (China)
H. H. Jiang, Anhui Institute of Optics and Fine Mechanics (China)
Q. L. Zhang, Anhui Institute of Optics and Fine Mechanics (China)
S. T. Yin, Anhui Institute of Optics and Fine Mechanics (China)

Published in SPIE Proceedings Vol. 6823:
High-Power Lasers and Applications IV
Dianyuan Fan; Robert F. Walter, Editor(s)

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