Abstract
In this work, Pr3+ was introduced into Nd3+-doped tellurite glass with composition TeO2-ZnO-Na2O-Nb2O5 to achieve broadband near-infrared emission. A broadband fluorescence emission ranging from 1 250 nm to 1 530 nm was obtained under the excitation of 808 nm LD, which is contributed by the Pr3+:1D2 →1G4 and Nd3+:4F3/2→4I13/2 transitions emitting the fluorescence located at around 1.47 μm and 1.35 μm bands, respectively. The 1.47 μm band fluorescence of Pr3+ is attributed to the energy transfer from Nd3+ to Pr3+ ions and the energy transfer mechanism was further investigated by calculating relevant micro-parameter and phonon contribution ratio. Meanwhile, the studied tellurite glass possesses good thermal stability. The present work indicates that Pr3+/Nd3+ codoped tellurite glass is an excellent gain medium for potential O+E+S-band broad optical amplifiers.
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This work has been supported by the National Natural Science Foundation of China (No.61875095), the Natural Science Foundation of Ningbo City (No.2016A610061), and the K. C. Wong Magna Fund in Ningbo University
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Shen, Xj., Zhu, Yr., Zhou, Zz. et al. Pr3+/Nd3+ codoped tellurite glass for O+E+S-band broad emission. Optoelectron. Lett. 15, 424–427 (2019). https://doi.org/10.1007/s11801-019-9012-6
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DOI: https://doi.org/10.1007/s11801-019-9012-6