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Er-Yb-codoped Li6Y(BO3)3 single crystal was grown by the Czochralski method. The accurate concentration of Er3+ and Yb3+ions in the crystal was measured. The polarized absorption and fluorescence spectra of the Er3+-doped Li6Y(BO3)3 crystal were recorded at room temperature. The fluorescence decay curves at 1030 and 1535nm were recorded. The efficiency of energy transfer from Yb3+ to Er3+ ions was...
An Er:Yb:GdAl3(BO3)4 crystal was grown and room-temperature polarized absorption, emission, and gain spectra were investigated. Fluorescence decay curves of Er3+ at 1530 nm and Yb3+ at 1040 nm in the crystal were measured. Efficient laser operation of Er:Yb:GdAl3(BO3)4 crystal at 1.5-1.6 mum was realized. Quasi-continuous-wave output powers of 1.8 W with slope efficiency of 19% and 0.78 W with slope...
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