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Efficient lasing in diode-pumped Yb<sup>3+</sup>:CaF<sub>2</sub>–SrF<sub>2</sub>solid-solution single crystals
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2007
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Materials SciencePhotonicsSingle CrystalsOptical MaterialsEngineeringOptical PumpingPhysicsOptical PropertiesCrystal Growth TechnologyApplied PhysicsLaser MaterialSmall Stokes ShiftOptoelectronicsSolid-state LasersSaddle Point
Single crystals of solid solutions of a high optical quality are grown in the concentration vicinity of the saddle point of the ternary CaF2–SrF2–YbF3 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%.