节点文献

掺Eu3+离子Y2SiO5晶体格位选择光谱研究

Site Selective Spectra of Eu3+ Doped Y2SiO5 Crystal

  • 推荐 CAJ下载
  • PDF下载
  • 不支持迅雷等下载工具,请取消加速工具后下载。

【作者】 薛绍林陈凌冰谢黎明李富铭张守都黄浩炳

【Author】 Xue Shaolin, Chen Lingbing, Xie Liming, Li Fuming( Department of Physics, Fudan University, Shanghai 200433, China ), Zhang Shoudu, Huang Haobing( Shanghai Institute of Optics, Chinese Academy of Sciences, Shanghai 201800, China)

【机构】 复旦大学三束改性国家重点实验室!上海200433中国科学院上海光学精密机械研究所!上海201800

【摘要】 分别利用白光灯、457-9 nm 氩离子激光、二倍频YAG∶Nd 激光泵浦的诺丹明6G 可调谐窄线宽(0-5 cm -1) 染料激光作为光源, 以单色仪锁相放大器光电倍增管计算机数据采集系统记录光谱, 测量并研究了Y2SiO5∶Eu3 + 晶体的透射光谱、荧光光谱、激发光谱和格位选择荧光光谱。5D0 →7F0,1 ,2 ,3,4 跃迁,30 多根谱线(总数为50 根) 被观察到。在该晶体中Eu3+ 替换Y3+ 离子, 占据两个较低对称性的光学格位, 这两个格位的5D0 7F0 能级跃迁谱线相隔大约只有0-2 nm , 在室温下有一定的光谱关联。并用X射线谱对晶体的晶格常数a , b,c 和晶面角度β进行测量, 测量结果显示掺杂后的晶格常数和未掺杂的Y2SiO5 晶格常数基本一致。

【Abstract】 By using a white light lamp, an Ar + ion laser whose wavelength was tuned to 457.9 nm and a tunable Rh 6G dye laser(linewidth: 0 5 cm -1 ) pumped by the second harmonic of a Nd∶YAG laser as light sources and using a monochromator, a phase locking amplifier and a computer as the data detecting system, the transmission spectrum, fluorescence spectra, excitation spectrum and site selective fluorescence spectra of the Eu 3+ ∶Y 2SiO 5 crystal were observed. More than thirty out of the total fifty spectral lines were observed for 5 D 0→ 7F 0,1,2,3,4 transitions. The Eu 3+ ions occupy two kinds of the Y 3+ sites with the low symmetry in this crystal. The difference of the wavelengths of the two Eu 3+ sites for 7 F 0→ 5D 0 transition is about 0 2 nm. We found that the two site are nonequivalent optical ones at room temperature. Crystal lattice constants a, b, c and β of Eu 3+ ∶Y 2SiO 5 are also measured by the X ray diffraction method. The results show that the lattice constants a, b, and c of the crystal doped Eu 3+ ions is very close to those of the Y 2SiO 5 crystal undoped Eu 3+ ions.

【基金】 国家自然科学基金!资助项目(69807001,69587002)
  • 【文献出处】 中国稀土学报 ,JOURNAL OF THE CHINESE RARE EARTH SOCIETY , 编辑部邮箱 ,1999年04期
  • 【分类号】O734
  • 【被引频次】2
  • 【下载频次】100
节点文献中: 

本文链接的文献网络图示:

本文的引文网络