Homogeneously broadened far-infrared absorption line due to the transition of excited chromium ions in ruby |
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Authors: | N. Retzer H. Lengfellner K.F. Renk |
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Affiliation: | Institut für Angewandte Physik, Universität Regensburg, 8400 Regensburg, West Germany |
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Abstract: | By use of far-infrared laser spectroscopy, we have found that for a high-quality ruby crystal at low temperature, the absorption line due to the electronic transition between the excited states and ions is homogeneously broadened. From the linewidth (0.011 cm-1) the lifetime of the 2ā level against emission of 29 cm-1 phonons is obtained. |
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