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One of the promising ways to improve the efficiency of lasers operating at wavelengths near 1600 nm and 3000 nm on
base of garnets doped with Er3+ ions is their sensitization with Ce3+ ions. In this work the investigation results of spectral
characteristics of YAG:Er3+, YAG:Ce3+ and YAG:Ce3+, Er3+ crystals at room temperatures are presented. Dependencies
of these characteristics on the optical excitations at 457 nm, 808 nm and 980 nm wavelengths are studied. The influence
of Ce3+ sensitizer ions on the efficiency and mechanisms of the various energy levels' population processes of Er3+activator ions in the YAG matrix is discussed.
V. G. Babajanyan,R. B. Kostanyan,P. H. Muzhikyan,A. G. Petrosyan, andR. V. Sargsyan
"Influence of Ce3+ sensitizers on spectroscopic properties of Er3+ ions in YAG:Ce3+, Er3+ crystals", Proc. SPIE 7998, International Conference on Laser Physics 2010, 799803 (4 March 2011); https://doi.org/10.1117/12.890887
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V. G. Babajanyan, R. B. Kostanyan, P. H. Muzhikyan, A. G. Petrosyan, R. V. Sargsyan, "Influence of Ce[sup]3+[/sup] sensitizers on spectroscopic properties of Er[sup]3+[/sup] ions in YAG:Ce[sup]3+[/sup], Er[sup]3+[/sup] crystals," Proc. SPIE 7998, International Conference on Laser Physics 2010, 799803 (4 March 2011); https://doi.org/10.1117/12.890887