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Concentration dependence of the Ebar-]2abar far-infrared transition of excited chromium ions in ruby

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DOI to cite this document:
Lengfellner, Hans ; Werling, U. ; Hummel, J. ; Netter, H. ; Retzer, N. ; Renk, Karl Friedrich
Date of publication of this fulltext: 08 Dec 2010 08:21


The absorption due to electronic transitions between the excited Image (2E) state and the 2Image (2E) state of Cr3+ ions in optically pumped ruby is studied by Zeeman spectroscopy with a far-infrared laser. We find that the linewidth and the oscillator strength of the Image → 2Image transition increase quadratically with the chromium concentration for ruby crystals containing more than 0.1 wt.% Cr2O3.

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