New Al2O3-Nb2O5-TeO2 glasses doped with Er3+, Nd3+ and Tm3+ were prepared by conventional melt quenching. The absorption spectra were measured and the Judd-Ofelt parameters were extracted. Luminescence spectra in the near infrared region were measured and the values of the stimulated cross sections up were evaluated for selected laser transitions. The relatively high values of sigma(p) suggest that these materials can be considered as interesting candidates for optical applications. The spectroscopic behaviour of the lanthanide ions appears to be influenced by the amount of Nb2O5 and Al2O3 in the glass hosts.
Optical spectroscopy of lanthanide ions in Al2O3-Nb2O5-TeO2 glasses
SPEGHINI, Adolfo;BETTINELLI, Marco Giovanni;
2004-01-01
Abstract
New Al2O3-Nb2O5-TeO2 glasses doped with Er3+, Nd3+ and Tm3+ were prepared by conventional melt quenching. The absorption spectra were measured and the Judd-Ofelt parameters were extracted. Luminescence spectra in the near infrared region were measured and the values of the stimulated cross sections up were evaluated for selected laser transitions. The relatively high values of sigma(p) suggest that these materials can be considered as interesting candidates for optical applications. The spectroscopic behaviour of the lanthanide ions appears to be influenced by the amount of Nb2O5 and Al2O3 in the glass hosts.
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