1. Crystal growth and spectroscopic analysis of Ho,Pr:BaF2 crystal for 3 μm mid-infrared emission.
- Author
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Ren, Yongchun, Dong, Jianshu, Wang, Wudi, Li, Jianda, Cao, Xiao, Song, Qingsong, Wu, Mengmeng, Qian, Xinyu, Xue, Yanyan, Wang, Qingguo, Tang, Huili, Xu, Xiaodong, and Xu, Jun
- Subjects
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FLUORESCENCE spectroscopy , *CRYSTAL growth , *ABSORPTION spectra , *DOPING agents (Chemistry) , *LUMINESCENCE - Abstract
Ho-doped and Ho,Pr co-doped BaF 2 crystals were grown using the temperature gradient technique. The absorption spectra, fluorescence spectra, and fluorescence lifetimes were measured and analyzed. For Ho-doped BaF 2 , 1.0 at.% Ho:BaF 2 showed the best luminescence performance in the 3 μm band. After co-doping with Pr3+, the lower-level lifetime of Ho3+ ions in the 3 μm band was significantly reduced, while the upper laser level lifetime was minimally affected, indicating that Pr3+ ions can be effectively used as a deactivating ion of Ho3+ ions in the BaF 2 matrix. For 1.5 at.% Ho, 0.1 at.% Pr:BaF 2 , the lifetime ratio of the upper and lower levels was 0.47, effectively realizing population inversion. • Ho-doped BaF 2 , 1.0 at.% Ho:BaF 2 showed the best luminescence performance in the 3 μm band. • Pr3+ ions can be effectively used as a deactivating ion of Ho3+ ions in the BaF 2 matrix. • For 1.5 at.% Ho, 0.1 at.% Pr:BaF 2 , the lifetime ratio of the upper and lower levels was 2:7, effectively realizing population inversion. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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