TUTCRIS - Tampereen teknillinen yliopisto

TUTCRIS

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

Tutkimustuotosvertaisarvioitu

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut926-931
Sivumäärä6
JulkaisuOptical Materials
Vuosikerta36
Numero5
DOI - pysyväislinkit
TilaJulkaistu - maaliskuuta 2014
OKM-julkaisutyyppiA1 Alkuperäisartikkeli

Tiivistelmä

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 4I13/24I 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.