Abstract
Dy3+-doped Y3Al5O12 (YAG) and Y3ScAl4O12 (YSAG) single crystals have been successfully grown by the micro-pulling-down (μ-PD) technique for the first time. The room temperature absorption spectra, fluorescence spectra and fluorescence decay curves were measured. Dy:YAG and Dy:Y3ScAl4O12 crystals exhibit strongest emission centered at 583 nm, corresponding to the 4F9/2 → 6H13/2 transition. The decay lifetime of the 4F9/2 level was measured to be 634 μs and 667 μs, respectively. All these results indicate that the Dy:YAG and Dy:Y3ScAl4O12 crystals are promising candidates for yellow laser operation.
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