Abstract

In Er3+:YAG crystal, dependence of the competition between different upconversion (UC) mechanisms for the population of P322 on the exciting wavelength has been observed. An approximate method has been proposed for quantitative analysis of different UC-mechanism contributions by utilizing the excitation spectra of P322 and G922. The sensitive dependence of the dominant UC mechanism and the fluorescence dynamic behaviors on exciting wavelength observed in the experiment could be well reproduced by this simple and effective method.

© 2010 Optical Society of America

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