Investigation of growth and polarized spectra of Ho3+ ions heavily doped BaY2F8 crystal

被引:0
作者
Liu, Xingkun [1 ,2 ]
Tao, Siliang [1 ]
Gong, Qiaorui [1 ,2 ]
Huang, Conghui [1 ,2 ]
Fang, Qiannan [1 ]
Chen, Guangzhu [1 ]
Hang, Yin [1 ]
Li, Shanming [1 ]
Zhao, Chengchun [1 ]
机构
[1] Chinese Acad Sci, Shanghai Inst Opt & fine Mech, Res Ctr Laser Crystal, Shanghai 201800, Peoples R China
[2] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
基金
中国国家自然科学基金; 上海市自然科学基金;
关键词
Crystal growth; Mid-infrared laser; Polarized absorption spectrum; Directly-pumped; Ho:BYF; Judd-ofelt theory; JUDD-OFELT ANALYSIS; ENERGY-LEVELS; SPECTROSCOPY; INTENSITIES; PARAMETERS; LASERS;
D O I
10.1016/j.optmat.2024.115775
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A BaY2F8 (BYF) single crystal heavily doped with Ho3+ ion was grown successfully using the Czochralski (Cz) method. The infrared fluorescence spectra (2-4 mu m) and fluorescence lifetime at 3.9 mu m were investigated. The detailed polarization absorption properties of Ho:BYF, especially the absorption spectrum in 850-950 nm range, were reported for the first time. The maximum absorption cross-section was at 888.15 nm, sigma(abs) = 1.26x10(-21) cm(2) (E//c). In comparison, the peak positions of the absorption cross sections in the other two polarization directions were at 885.80 nm and 890.45 nm, respectively, indicating that incident light's polarization direction greatly influences absorption. The spectroscopic parameters were calculated based on the Judd-Ofelt theory.
引用
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页数:6
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