1. Optical spectroscopy of Dy3+-doped CaGdAlO4 single crystal for potential use in solid-state yellow lasers.
- Author
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Xu, Xiaodong, Hu, Zongwen, Li, Ruijuan, Li, Dongzhen, Di, Juqing, Su, Liangbi, Yang, Qiuhong, Sai, Qinglin, Tang, Huili, Wang, Qingguo, Strzęp, Adam, and Xu, Jun
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OPTICAL spectroscopy , *CRYSTAL growth , *DYSPROSIUM , *DOPED semiconductors , *CALCIUM compounds , *SINGLE crystals , *SOLID-state lasers - Abstract
The crystal growth, optical spectra and lifetime of Dy:CaGdAlO 4 crystal were investigated for the first time to our best knowledge. Single Dy:CaGdAlO 4 crystal with size of Φ4 × 40 mm 3 was grown by floating zone method. The peak absorption cross-sections were calculated to be 2.43 × 10 −21 cm 2 and 1.28 × 10 −21 cm 2 at 453 nm for σ and π polarizations. The Judd-Ofelt (JO) parameters of Ω 2 , Ω 4 and Ω 6 were calculated to be 1.8 × 10 −20 cm 2 , 1.0 × 10 −20 cm 2 and 0.5 × 10 −20 cm 2 , respectively. The emission cross-sections were calculated to be 0.51 × 10 −20 cm 2 and 0.55 × 10 −20 cm 2 for σ and π polarizations. The fluorescence decay time is 222 μs. The results indicate that the Dy:CaGdAlO 4 crystal is a potential candidate for yellow laser operation. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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