中国物理B ›› 2004, Vol. 13 ›› Issue (12): 2162-2168.doi: 10.1088/1009-1963/13/12/033

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Comparative study of spectroscopic properties of Er3+/Yb3+-codoped tellurite glass and fibres under 980nm excitation

戴世勋, 张军杰, 李顺光, 徐时清, 汪国年, 杨建虎, 胡丽丽   

  1. Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 收稿日期:2003-12-15 修回日期:2004-06-09 出版日期:2004-12-17 发布日期:2005-03-17
  • 基金资助:
    Project supported by the Optical Science and Technology Foundation of Shanghai (Grant No 022261046), National Natural Science Foundation of China (Grant No 60207006), and the Shanghai "Qimingxing" Project (Grant No 04QMX1448).

Comparative study of spectroscopic properties of Er3+/Yb3+-codoped tellurite glass and fibres under 980nm excitation

Dai Shi-Xun (戴世勋), Zhang Jun-Jie (张军杰), Li Shun-Guang (李顺光), Xu Shi-Qing (徐时清), Wang Guo-Nian (汪国年), Yang Jian-Hu (杨建虎), Hu Li-Li (胡丽丽)   

  1. Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • Received:2003-12-15 Revised:2004-06-09 Online:2004-12-17 Published:2005-03-17
  • Supported by:
    Project supported by the Optical Science and Technology Foundation of Shanghai (Grant No 022261046), National Natural Science Foundation of China (Grant No 60207006), and the Shanghai "Qimingxing" Project (Grant No 04QMX1448).

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摘要： A tellurite fibre of TeO_{2}－ZnO－La_{2}O_{3}－Li_{2}O glass codoped with 20000 ppm ytterbium and 5000 ppm erbium was fabricated by the suction casting and rod-in-tube technologies. The absorption spectrum of Er^{3+}/Yb^{3+} -codoped bulk glass has been measured. From the Judd－Ofelt intensity parameters, the spontaneous emission probability and radiative lifetime τ_{rad} of Er^{3+}:{}^{4}I_{13/2}→{}^{4}I_{15/2} transition for the bulk glass have been calculated. The emission fluorescence spectra and lifetimes around 1.5μm, and subsequent upconversion fluorescence in the range of 500－700nm were measured in fibres and compared with those in bulk glass. The changes in amplified spontaneous emission with fibre length and pumping power was also measured. It was found that the emission spectrum from erbium in fibres is almost twice as broad as the corresponding spectrum in bulk glass when pumped at 980nm.

关键词: tellurite glass, fibre, erbium doping, spectroscopy, Judd－Ofelt theory

Abstract: A tellurite fibre of TeO$_{2}$－ZnO－La$_{2}$O$_{3}$－Li$_{2}$O glass codoped with 20000 ppm ytterbium and 5000 ppm erbium was fabricated by the suction casting and rod-in-tube technologies. The absorption spectrum of Er$^{3+}$/Yb$^{3+}$ -codoped bulk glass has been measured. From the Judd－Ofelt intensity parameters, the spontaneous emission probability and radiative lifetime $\tau_{\rm rad}$ of Er$^{3+}$:$^{4}$I$_{13/2}$→$^{4}$I$_{15/2}$ transition for the bulk glass have been calculated. The emission fluorescence spectra and lifetimes around 1.5μm, and subsequent upconversion fluorescence in the range of 500－700nm were measured in fibres and compared with those in bulk glass. The changes in amplified spontaneous emission with fibre length and pumping power was also measured. It was found that the emission spectrum from erbium in fibres is almost twice as broad as the corresponding spectrum in bulk glass when pumped at 980nm.

Key words: tellurite glass, fibre, erbium doping, spectroscopy, Judd－Ofelt theory

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

  • 78.55.Qr
78.45.+h (Stimulated emission)