New germanates with the NdAlGe2O7-type structure are synthesized. The Czochralski method is used to grow LaGaGe2O7: Nd3+ single crystals and the full concentration series of Gd1−xNdxGaGe2O7 crystals. The GdGaGe2O7 crystal structure is refined. The absorption–luminescence properties of the grown crystals have been studied. The main intensity parameters of luminescence are determined. The stimulated emission of the crystals including that of self-activated NdGaGe2O7, are excited for two lasing 4F3/2 → 4I11/2 and 4F3/2 → 4I13/2 channels, using the conventional lamppumping technique at 300 K. All the observed induced transitions are identified.
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Kaminskiĭ et al. (1987) studied this question.
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