Liu, Yunyun1; Pan, Fei2; Tu, Chaoyang3; Gao, Ju1
发表期刊JOURNAL OF LUMINESCENCE
ISSN0022-2313
2021-08-01
卷号236页码:6
关键词Dy3+:CaLaGa3O7XRD Rietveld refinementFirst-principles calculationsSpectroscopic characteristicsYellow emission
DOI10.1016/j.jlumin.2021.118122
通讯作者Liu, Yunyun(liuyunyun586@163.com)
英文摘要High optical quality Dy3+-doped CaLaGa3O7 (abbreviated as Dy: CLGO below) crystal was grown successfully by the Czochralski technique along the (0 0 1) orientation. The lattice parameters of the as-grown crystal were obtained by Rietveld refinement to its XRD pattern. The electronic structures including band structure and density of state (DOS) were calculated by using first-principles calculations based on density functional theory (DFT). The spectroscopic characteristics of Dy: CLGO are investigated, with special attention to the yellow emission that could be pumped directly by the rapidly developed blue GaN LD. Based on the Judd-Ofelt (J-O) theory, the intensity parameters from the measured line strengths were determined. The J-O parameters were used to predict radiative transition probabilities, radiative lifetime and branching ratios for various excited levels of the Dy: CLGO crystal. The absorption cross-sections of Dy: CLGO at 453 nm are calculated to be 0.14 x 10(-20) cm(2) and 0.11 x 10(-20) cm(2) for pi- and sigma-polarizations, respectively. Meanwhile, Dy: CLGO exhibits strong yellow emission at 574 nm corresponding to the transition F-4(9/2) -> H-6(13/2) with stimulated emission cross-sections of 3.88 x 10(-21) cm(2) and 3.42 x 10(-21) cm(2) for pi- and sigma-polarizations, respectively. The relatively long fluorescence lifetime (565 mu s) indicates a high laser efficiency of the crystal. All results suggest that Dy: CLGO crystal could be a promising candidate for yellow laser at 574 nm pumped by blue GaN LD.
资助机构Shandong Provincial Natural Science Foundation; National Key Research and Development Program of China; Natural science foundation of shandong province; Qingchuang Science and Technology Plan of Shandong Universities; Project Special Funding of Taishan Scholar
收录类别SCI
语种英语
关键词[WOS]SPECTROSCOPIC PROPERTIES; TRANSITIONS INTENSITIES; ABSORPTION INTENSITIES; OPTICAL-TRANSITIONS; LASER; EMISSION; MELILITE; GROWTH; ER3+; NM
研究领域[WOS]Optics
WOS记录号WOS:000663095900007
引用统计
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/29437
专题中科院烟台海岸带研究所知识产出
通讯作者Liu, Yunyun作者单位1.Zaozhuang Univ, Sch Optoelect Engn, Zaozhuang 277160, Peoples R China
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
3.Chinese Acad Sci, Fujian Inst Res Struct Matter, Key Lab Optoelect Mat Chem & Phys, Fuzhou 350002, Fujian, Peoples R China
推荐引用方式
GB/T 7714Liu, Yunyun,Pan, Fei,Tu, Chaoyang,et al. Structure, first-principles calculations and yellow spectral properties of Dy3+: CaLaGa3O7 single crystal[J]. JOURNAL OF LUMINESCENCE,2021,236:6.
APALiu, Yunyun,Pan, Fei,Tu, Chaoyang,&Gao, Ju.(2021).Structure, first-principles calculations and yellow spectral properties of Dy3+: CaLaGa3O7 single crystal.JOURNAL OF LUMINESCENCE,236,6.
MLALiu, Yunyun,et al."Structure, first-principles calculations and yellow spectral properties of Dy3+: CaLaGa3O7 single crystal".JOURNAL OF LUMINESCENCE 236(2021):6.
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