Single crystals of solid solutions of a high optical quality are grown in the concentration vicinity of the saddle point of the ternary CaF 2 –SrF 2 –YbF 3 system. Efficient lasing with a small Stokes shift (at 1025 nm) was obtained in 980-nm diode-pumped single crystals. The total lasing efficiency (with respect to the absorbed average pump power) was 59% and the slope efficiency was 83%.
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Basiev et al. (2007) studied this question.
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