期刊
PHYSICA B-CONDENSED MATTER
卷 530, 期 -, 页码 317-321出版社
ELSEVIER
DOI: 10.1016/j.physb.2017.12.001
关键词
Dy:YAG; Crystal growth; Yellow laser; Judd-Ofelt theory
资金
- National Key Research and Development Program of China [2016YFB0701002]
- National Natural Science Foundation of China [61621001]
High optical quality Dy:Y3Al5O12 (Dy:YAG) crystal has been grown by the Czochralski method. Absorption spectra, fluorescence spectra and fluorescence decay curve of Dy:YAG have been recorded at room temperature. The strongest emission of Dy:YAG crystal is near 583 nm, corresponding to the F-4(9/2) -> H-6(13/2) transition. The Judd-Ofelt parameters Omega(2), Omega(4) and Omega(6) were calculated to be 1.49 x 10(-20) cm(2), 0.94 x 10(-20) cm(2) and 3.20 x 10(-20) cm(2), respectively. The radiative transition rates, branching ratios and the emission cross sections were calculated. The fluorescence and radiative lifetimes are 0.40 ms and 1.02 ms, respectively, resulting in a quantum efficiency of 39.2%. The results indicate that the Dy:YAG crystal would be a promising yellow solid state laser material.
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