| Autor: |
Shaoxiong Shen, Chandra, Ashish, Richard, Billy, Jha, Animesh |
| Předmět: |
|
| Zdroj: |
Glass Technology: European Journal of Glass Science & Technology Part A; Feb2009, Vol. 50 Issue 1, p71-74, 4p, 1 Chart, 7 Graphs |
| Abstrakt: |
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 4S3/2 level was 20-30 µs. With the addition of fluorine to the glass, the lifetime increased to 100 µs, which enhances the quantum efficiency for green lasing in tellurite glass fibre. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
