A comparative investigation of upconversion fluorescence in Er3+ doped fluoride, tellurite and fluoride-tellurite glasses

作者：Shen Shaoxiong^*; Chandra Ashish; Richard Billy; Jha Animesh

来源：Glass Technology-European Journal of Glass Science and Technology Part A, 2009, 50(1): 71-74.

The change in Er3+ green upconversion intensity with Er3+ ion concentration, co-doping with Yb3+ ion, fluorine concentration in the glass and the excited pump wavelengths has been systematically studied. The optimal Er3+ concentration and pump wavelength for green upconversion in tellurite glass have been obtained. Co-doping with Yb3+ ion in Er3+ doped fluoride-tellurite glass increases the green intensity dramatically, to a level comparable with that in Er3+ doped fluoride glass. In Er3+ doped tellurite glass, the lifetime of green fluorescence at S-4(3/2) level was 20-30 mu s. With the addition of fluorine to the glass, the lifetime increased to 100 mu s, which enchances the quantum efficiency for green lasing in tellurite glass fibre.

• 出版日期2009-2