In this work, Pr3+ was introduced into Nd3+-doped tellurite glass with composition Te O2-Zn O-Na2 O-Nb2 O5 to achieve broadband near-infrared emission. A broadband fluorescence emission ranging from 1 250 nm to 1 530 ...In this work, Pr3+ was introduced into Nd3+-doped tellurite glass with composition Te O2-Zn O-Na2 O-Nb2 O5 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+:1 D2 →1 G4 and Nd3+:4 F3/2→4 I13/2 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.展开更多
基金supported by the National Natural Science Foundation of China(No.61875095)the Natural Science Foundation of Ningbo City(No.2016A610061)the K.C.Wong Magna Fund in Ningbo University
文摘In this work, Pr3+ was introduced into Nd3+-doped tellurite glass with composition Te O2-Zn O-Na2 O-Nb2 O5 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+:1 D2 →1 G4 and Nd3+:4 F3/2→4 I13/2 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.
