20 May 2011 Multiphonon difference band absorption in diamond
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Abstract
The longwave absorption coefficient of diamond is composed of the two-phonon red wing and multiphonon difference (hot) bands. As temperature increases the difference bands rapidly grow in strength and dominate the absorption. A variation on a multiphonon sum band model is developed for difference bands and applied to a temperature dependent data set on CVD polycrystalline diamond that are 1.54 mm thick. The model can also be used to estimate multiphonon difference band contribution to the refractive index.
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Michael E. Thomas, Michael E. Thomas, "Multiphonon difference band absorption in diamond", Proc. SPIE 8016, Window and Dome Technologies and Materials XII, 80160H (20 May 2011); doi: 10.1117/12.884095; https://doi.org/10.1117/12.884095
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