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Chinese Physics, 2004, Vol. 13(12): 2162-2168    DOI: 10.1088/1009-1963/13/12/033
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

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)
Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
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.
Keywords:  tellurite glass      fibre      erbium doping      spectroscopy      Judd-Ofelt theory  
Received:  15 December 2003      Revised:  09 June 2004      Accepted manuscript online: 
PACS:  78.55.Qr (Amorphous materials; glasses and other disordered solids)  
  78.45.+h (Stimulated emission)  
  61.72.Ww  
Fund: 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).

Cite this article: 

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) Comparative study of spectroscopic properties of Er3+/Yb3+-codoped tellurite glass and fibres under 980nm excitation 2004 Chinese Physics 13 2162

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