Abstract
The polarized Raman spectrum of corundum was recorded and assigned by PORTO and KRISHNAN [1] in 1967 and assignment of phonons of ruby is therefore straightforward. Contrary to corundum, ruby is characterized by electronic states which absorb light from the visible part of the electromagnetic spectrum while strong fluorescence occurs in the R1 and R2 lines. The emission is due to transitions between the Ē and 2Ā levels — see Fig.1 -which are at 14418 cm-1 and 14447 cm-1 above the 4A2 ground state.
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References
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© 1981 Springer-Verlag Berlin Heidelberg
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Koningstein, J.A., Asano, M. (1981). A Quasi-Nonlinear Scattering Process: Probing of Short-Lived (μs to ps) Optically Pumped Excited States. In: Guimaraes, W.O.N., Lin, CT., Mooradian, A. (eds) Lasers and Applications. Springer Series in Optical Sciences, vol 26. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-38609-4_10
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DOI: https://doi.org/10.1007/978-3-540-38609-4_10
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