| Influences of Mg^2＋ ion on dopant occupancy and upconversion luminescence of Ho^3＋ ion in LiNbO3 crystal |
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| 引用本文： | 代丽,徐超,张颖,李大勇,徐玉恒.Influences of Mg^2＋ ion on dopant occupancy and upconversion luminescence of Ho^3＋ ion in LiNbO3 crystal[J].中国物理 B,2013(9):399-402. |
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| 作者姓名： | 代丽 徐超 张颖 李大勇 徐玉恒 |
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| 作者单位： | [1]School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150080, China [2]Applied Science College, Harbin University of Science and Technology, Harbin 150080, China [3]Department of the Applied Chemistry, Harbin Institute of Technology, Harbin 150001, China |
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| 基金项目： | Project supported by the China Postdoctoral Science Foundation （Grant No. 2012M520759 ） and the Science and Technology Research Project of Education Bureau of Heilongjiang Province, China （Grant No. 12531098）. |
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| 摘 要： | The effects of a Mg^2＋ ion on the dopant occupancy and upconversion luminescence of a Ho^3＋ ion in LiNbO3 crystal are reported. The birefringence gradient of the crystal is measured to investigate the optical homogeneity. The X-ray powder diffraction spectrum and the upconversion luminescence are used to investigate defect structure and spectroscopic properties of Mg,Ho：LiNbO3. Under 808-nm excitation, blue, red, and very intense yellow-green bands are observed. Based on the energy levels of Ho^3＋ in LiNbO3, and the pump intensity dependence of the observed emission, an excitation scheme is presented. The upconversion emission spectra reveal an enhancement of upconversion intensity when the Mg^2＋ ions are introduced into Ho：LiNbO3. The main upconversion mechanism is discussed in this work.
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| 关 键 词： | LiNbO3晶体 上转换发光 离子对 占用 掺杂 铌酸锂晶体 镁 发射光谱 |
Influences of Mg^2＋ ion on dopant occupancy and upconversion luminescence of Ho^3＋ ion in LiNbO3 crystal |
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| Dai Li,Xu Chao,Zhang Ying,Li Da-Yong,and Xu Yu-Heng.Influences of Mg^2＋ ion on dopant occupancy and upconversion luminescence of Ho^3＋ ion in LiNbO3 crystal[J].Chinese Physics B,2013(9):399-402. |
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| Authors: | Dai Li Xu Chao Zhang Ying Li Da-Yong and Xu Yu-Heng |
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| Affiliation: | ( a) School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150080, China b) Applied Science College, Harbin University of Science and Technology, Harbin 150080, China c) Department of the Applied Chemistry, Harbin Institute of Technology, Harbin 150001, China) |
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| Abstract: | The effects of a Mg2+ ion on the dopant occupancy and upconversion luminescence of a Ho3+ ion in LiNbO3 crystal are reported. The birefringence gradient of the crystal is measured to investigate the optical homogeneity. The X-ray powder diffraction spectrum and the upconversion luminescence are used to investigate defect structure and spectroscopic properties of Mg,Ho:LiNbO3 . Under 808-nm excitation, blue, red, and very intense yellow-green bands are observed. Based on the energy levels of Ho3+ in LiNbO3 , and the pump intensity dependence of the observed emission, an excitation scheme is presented. The upconversion emission spectra reveal an enhancement of upconversion intensity when the Mg2+ ions are introduced into Ho:LiNbO3 . The main upconversion mechanism is discussed in this work. |
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| Keywords: | Mg Ho：LiNb03 upconversion luminescence optical homogeneity |
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