中国物理B ›› 2001, Vol. 10 ›› Issue (1): 58-64.doi: 10.1088/1009-1963/10/1/313

• • 上一篇    

FLUORESCENCE MECHANISMS OF Tm3+- AND Yb3+/Tm3+ DOPED AlF3-BASED FLUORIDE GLASS

张龙, 张军杰, 胡和方, 林凤英   

  1. Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 收稿日期:2000-03-23 修回日期:2000-08-21 出版日期:2001-01-15 发布日期:2005-06-12

FLUORESCENCE MECHANISMS OF Tm3+- AND Yb3+/Tm3+ DOPED AlF3-BASED FLUORIDE GLASS

Zhang Long (张龙), Zhang Jun-jie (张军杰), Hu He-fang (胡和方), Lin Feng-ying (林凤英)   

  1. Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • Received:2000-03-23 Revised:2000-08-21 Online:2001-01-15 Published:2005-06-12

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摘要： A complete set of spectroscopic parameters, including Judd-Ofelt parameters, radiative transition probabilities, radiative lifetime, branching ratios and integrated absorption cross section, have been calculated for Tm3+- doped fluoroaluminate (AYF) glass, based on the measured absorption spectra. The mechanism of Tm3+→Tm3+ and Yb3+\Leftrightarrow Tm3+ energy transfers and fluorescence properties have been investigated in both Tm3+ single-doped and Yb3+/Tm3+ double-doped AYF glasses. The cross-relaxation process, 3F4+3H6→23H4, is proved, which makes the optimum Tm3+ concentration of 1.77μm fluorescence (3H4→3H6) much higher than 1.45μm fluorescence (3F4→33H4) in Tm3+:AYF glasses. In Yb3+/Tm3+:AYF glasses, a stronger concentration quenching is found for the 476nm emission than that for the 797nm emission, and is discussed under the 970nm-excitation.

Abstract: A complete set of spectroscopic parameters, including Judd-Ofelt parameters, radiative transition probabilities, radiative lifetime, branching ratios and integrated absorption cross section, have been calculated for Tm3+- doped fluoroaluminate (AYF) glass, based on the measured absorption spectra. The mechanism of Tm3+→Tm3+ and Yb3+ $\Leftrightarrow$ Tm3+ energy transfers and fluorescence properties have been investigated in both Tm3+ single-doped and Yb3+/Tm3+ double-doped AYF glasses. The cross-relaxation process, 3F4+3H6→23H4, is proved, which makes the optimum Tm3+ concentration of 1.77μm fluorescence (3H4→3H6) much higher than 1.45μm fluorescence (3F4→3H4) in Tm3+:AYF glasses. In Yb3+/Tm3+:AYF glasses, a stronger concentration quenching is found for the 476nm emission than that for the 797nm emission, and is discussed under the 970nm-excitation.

Key words: fluoroaluminate glass, Judd-Ofelt analysis, energy transfer, rare earth

中图分类号:  (Amorphous materials; glasses and other disordered solids)

  • 78.55.Qr
78.40.-q (Absorption and reflection spectra: visible and ultraviolet)