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High-energy levels of a Cr 3 + ion in Y 3 Al 5 O 12

Ivan S. Gorban, A. F. Gumenyuk, V.Ya. Degoda

Published Sep 1, 1986• 0 citations
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Journal of the Optical Society of America B•Mar 1, 1996•9 citations
We present the results of nondegenerate two-wave mixing measurements in Cr−3:YAlO3 and in Cr−3: Er−3:YAlO3 in which the induced index change arises from the population of the 2E excited state of the chromium. The presence of erbium ions alters the 2E-level lifetime and quenches the chromium nonlinearity. We interpret our results in terms of a model in which different lifetimes are assigned to the chromium ions. Chromium ions close enough to an erbium ion to experience quenching by nonradiative energy transfer have lifetimes that are shorter than chromium ions that are not affected by energy transfer.