Influence of the P₂O₅/Al₂O₃ co-doping on the local environment of erbium ions and on the 1.5 渭m quantum efficiency of Er³⁺-borosilicate glasses

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• 作者：Kevin Bourhis ; Nadia G. Boetti ; Joona Koponen ; Daniel Milanese ; Laetica Petit
• 关键词：Er doped borosilicate glasses ; Judd&ndash ; Ofelt parameters ; Lifetime ; Luminescence quantum efficiency
• 刊名：Optical Materials
• 出版年：March, 2014
• 年：2014
• 卷：36
• 期：5
• 页码：926-931
• 全文大小：438 K

文摘

In this paper, the absorption properties of Er³⁺-doped borosilicate glasses with various P₂O₅ and Al₂O₃ content are measured for different silica concentrations. The Judd-Ofelt parameters (惟₂, 惟₄ and 惟₆) have been calculated in order to investigate the local environment of the rare-earth cations. The compositional changes of 惟₂ and 惟₆ are attributed to changes in the bonding between Er³⁺ and surrounding ligand groups due to structural modifications occurring with the introduction of P₂O₅ and Al₂O₃. The luminescence quantum efficiency of the ⁴I_13/2 鈫?#xA0;⁴I_15/2 transition slightly increases with the addition of P₂O₅ whereas it decreases with the progressive replacement of P₂O₅ by Al₂O₃. We noticed that it also increases when the silica content is higher.