中国物理B ›› 2007, Vol. 16 ›› Issue (6): 1736-1742.doi: 10.1088/1009-1963/16/6/043

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Effect of lithium-potassium mixed alkali on spectroscopic properties of Er3+-doped aluminophosphate glasses

廖梅松1, 胡丽丽1, 房永征2   

  1. (1)Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, Shanghai 201800, China; (2)Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, Shanghai 201800, China;Shanghai Institute of Technology, Shanghai 200023, China
  • 收稿日期:2006-10-20 修回日期:2006-12-29 出版日期:2007-06-20 发布日期:2007-06-20
  • 基金资助:
    Project supported by the Young Teacher Foundation of Shanghai Education Committee (Grant No 04YQHB162) and the National Natural Science Foundation of China (Grant No 50572110).

Effect of lithium-potassium mixed alkali on spectroscopic properties of Er3+-doped aluminophosphate glasses

Fang Yong-Zheng(房永征)a)b)†, Liao Mei-Song(廖梅松)a), and Hu Li-Li(胡丽丽)a)   

  1. a Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, Shanghai 201800, China; b Shanghai Institute of Technology, Shanghai 200023, China
  • Received:2006-10-20 Revised:2006-12-29 Online:2007-06-20 Published:2007-06-20
  • Supported by:
    Project supported by the Young Teacher Foundation of Shanghai Education Committee (Grant No 04YQHB162) and the National Natural Science Foundation of China (Grant No 50572110).

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摘要： Er$^{3+}$-doped lithium-potassium mixed alkali aluminophosphate glasses belonging to the oxide system $x$K$_2$O-(15-$x$)Li$_2$O-4B$_2$O$_3$-11Al$_2$O$_3$-5BaO-65P$_2$O$_5$ are obtained in a semi-continuous melting quenching process. Spectroscopic properties of Er$^{3+}$-doped glass matrix have been analysed by fitting the experimental data with the standard Judd--Ofelt theory. It is observed that Judd--Ofelt intensity parameters ${\it\Omega}_ t (t= 2$, 4 and 6) of Er$^{3+}$ change when the second alkali is introduced into glass matrix. The variation of line strength $S_{\rm ed}$[$^4$I$_{13/2}$,$^4$I$_{15/2}$] follows the same trend as that of the ${\it\Omega}_6$ parameter. The effect of mixed alkali on the spectroscopic properties of the aluminophosphate glasses, such as absorption cross-section, stimulated emission cross-section, spontaneous emission probability, branching ratio and the radiative lifetime, has also been investigated in this paper.

Abstract: Er$^{3+}$-doped lithium-potassium mixed alkali aluminophosphate glasses belonging to the oxide system $x$K$_2$O-(15-$x$)Li$_2$O-4B$_2$O$_3$-11Al$_2$O$_3$-5BaO-65P$_2$O$_5$ are obtained in a semi-continuous melting quenching process. Spectroscopic properties of Er$^{3+}$-doped glass matrix have been analysed by fitting the experimental data with the standard Judd--Ofelt theory. It is observed that Judd--Ofelt intensity parameters ${\it\Omega}_ t (t= 2$, 4 and 6) of Er$^{3+}$ change when the second alkali is introduced into glass matrix. The variation of line strength $S_{\rm ed}$[$^4$I$_{13/2}$,$^4$I$_{15/2}$] follows the same trend as that of the ${\it\Omega}_6$ parameter. The effect of mixed alkali on the spectroscopic properties of the aluminophosphate glasses, such as absorption cross-section, stimulated emission cross-section, spontaneous emission probability, branching ratio and the radiative lifetime, has also been investigated in this paper.

Key words: non-crystalline materials, mixed alkali, radiative lifetime, Judd--Ofelt theory

中图分类号:  (Stimulated emission)

  • 78.45.+h
78.30.Ly (Disordered solids) 78.40.Pg (Disordered solids)