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An experimental investigation was made of the influence of interaction processes involving excited Er3+ ions on the stimulated emission characteristics of a 3-μm yttrium scandium gallium garnet (YSGG:Cr3+:Er3+) crystal laser pumped by a krypton laser. The results are explained using a spectroscopic model of this crystal.
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Noginov et al. (1990) studied this question.
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