1. Efficiently strengthen and broaden 3 μm fluorescence in PbF2 crystal by Er3+/Ho3+ as co-luminescence centers and Pr3+ deactivation.
- Author
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Huang, Xingbin, Wang, Yuhao, Zhang, Peixiong, Su, Zikang, Xu, Jingdong, Xin, Kunyuan, Hang, Yin, Zhu, Siqi, Yin, Hao, Li, Zhen, Chen, Zhenqiang, Zheng, Yi, and Li, Haifeng
- Subjects
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FLUORESCENCE , *SOLID-state lasers , *CRYSTALS , *SEMICONDUCTOR lasers , *ENERGY transfer , *LUMINESCENCE , *LUMINESCENCE spectroscopy , *PHOTOSENSITIZERS - Abstract
An efficient enhancement and broadening 3 μm luminescence in the Er/Ho/Pr: PbF 2 crystal was obtained for the first time. The 3 μm emission characteristics and energy transfer mechanism of the as-grown crystals were investigated in details. It shows that the introduced Er3+ ion can not only act as a sensitizer for Ho3+ ion to allow the crystal to be pumped by a 980 nm laser diode, but also broaden the 3 μm fluorescence emission. Moreover, the Pr3+ ions can also act as a suitable deactivated ion for Er3+ and Ho3+ ions, bringing about the enhancing of 3 μm fluorescence emission. These results suggest that the Er/Ho/Pr: PbF 2 crystal may have potential applications around 3 μm broadband lasers. • Optical characteristics of Er/Ho/Pr: PbF 2 as 3 μm laser crystal was evaluated. • The mechanism of energy transfer between Er3+, Ho3+, and Pr3+ was investigated. • Er3+/Ho3+ ions broaden 3 μm fluorescence as co-luminescence centers. • An enhanced broadband emission with large effective bandwidth(330 nm) was obtained. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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