27 April 2005 Thermo-optic properties of laser crystals in the 100-300 K temperature range: Y3Al5O12 (YAG), YAlO3 (YALO) and LiYF4 (YLF)
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Abstract
Spectroscopic and thermo-optic properties of laser crystals are needed for solid-state laser performance modeling. Here we present a brief report on the measurement of key thermo-optic properties: thermal conductivity (κ), coefficient of thermal expansion (α), and thermal coefficient of refractive index (dn/dT). κ was measured using laser-flash method. α was measured using a 632.8-nm He-Ne Michelson laser interferometer. dn/dT was determined at 1064 nm, using measured values of α and the thermal coefficient of the optical path length. An extended paper containing more detailed results will be submitted to the Journal of Applied Physics.
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R. L. Aggarwal, D. J. Ripin, J. R. Ochoa, T. Y. Fan, "Thermo-optic properties of laser crystals in the 100-300 K temperature range: Y3Al5O12 (YAG), YAlO3 (YALO) and LiYF4 (YLF)", Proc. SPIE 5707, Solid State Lasers XIV: Technology and Devices, (27 April 2005); doi: 10.1117/12.601635; https://doi.org/10.1117/12.601635
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