Pr3+/Nd3+ codoped tellurite glass for O+E+S-band broad emission

• 来源期刊: 光电子快报（英文版）
• 年，卷（期）: 2019,（6）
• 页码范围: 424-427
• 页数: 4页
• 语种: 英文
• DOI: 10.1007/s11801-019-9012-6

摘要

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.