Influence of the P2O5/Al2O3 co-doping on the local environment of erbium ions and on the 1.5 μm quantum efficiency of Er3+-borosilicate glasses
Research output: Contribution to journal › Article › Scientific › peer-review
|Number of pages||6|
|Publication status||Published - Mar 2014|
|Publication type||A1 Journal article-refereed|
In this paper, the absorption properties of Er3+-doped borosilicate glasses with various P2O5 and Al 2O3 content are measured for different silica concentrations. The Judd-Ofelt parameters (Ω2, Ω4 and Ω6) have been calculated in order to investigate the local environment of the rare-earth cations. The compositional changes of Ω2 and Ω6 are attributed to changes in the bonding between Er3+ and surrounding ligand groups due to structural modifications occurring with the introduction of P2O 5 and Al2O3. The luminescence quantum efficiency of the 4I13/2 → 4I 15/2 transition slightly increases with the addition of P 2O5 whereas it decreases with the progressive replacement of P2O5 by Al2O3. We noticed that it also increases when the silica content is higher.