Spectroscopic and energy transfer mechanism of Er³⁺, Pr³⁺-codoped ZBYA glass

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• 作者：Feifei Huang ; Ying Tian ; Shiqing Xu ; ^{shiqingxu@cjlu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Junjie Zhang ; ^{jjzhang@cjlu.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Fluoride glasses ; 3  ; μm emission ; Cross section
• 刊名：Ceramics International
• 出版年：2016
• 出版时间：15 May 2016
• 年：2016
• 卷：42
• 期：7
• 页码：7924-7928
• 全文大小：822 K

文摘

Absorption spectra, emission spectra and the rate parameters of the energy-exchange processes relevant to the ⁴I_11/2→⁴I_13/2 laser transition in Er³⁺/Pr³⁺- codoped ZBYA(ZrF₄–BaF₂–AlF₃–YF₃) glass were presented. Intensive 2.7 μm emission was obtained in the codoped glass and the optimized concentration ratio of Pr³⁺ to Er³⁺ was found to be 0.1:1. With the presence of Pr³⁺ ions, the intensities of the green and near-infrared emission were dramatically reduced to 1/15 and 1/21, respectively. The Er³⁺/Pr³⁺-codoped sample was found to have higher predicted spontaneous transition probability (16.57%) along with larger calculated emission cross section (14.6×10⁻²¹ cm²). These results suggest that the 2.7 μm emission of Er³⁺ ions could be achieved in ZBYA glass and codoping with Pr³⁺ could greatly improve the mid-infrared emission performance.