铒镱共掺透明氟氧玻璃陶瓷光纤

E. Czerska, K. Wisniewski, E. Augustyn, C. Koepke, R. Lisiecki, M. Kępińska, M. Żelechower
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引用次数: 0

摘要

根据笔者之前的论文,铒镱共掺氟氧玻璃陶瓷纤维在488/515/980 nm激发下(Er3+离子跃迁4I13/2→4I15/2)比相应的玻璃纤维(批次成分48sio211al2o3 - 7na2co3 - 10cao - 10ppo - 12pb2 - 1.5/0.6YbF3-0.5/0.2ErF3)具有更好的1550 nm发射性能。作为标准多模波导芯(直径为62 μm)的玻璃纤维,用微塔拉伸至直径在50 ~ 80 μm之间,然后进行两步退火(580°C/1h -纳米晶体成核;760oC/15/30 min -纳米晶体生长)。这种热处理确保了透明玻璃陶瓷纤维的微观结构为均匀分布的纳米晶体(富铅、铒和镱的立方萤石晶体和六方PbF2晶体)嵌入玻璃基体中。它们的传输范围为80-90%,相对于它们提供的有限长度(~2m),似乎是足够的。玻璃陶瓷纤维在1530 nm处的发光强度高于玻璃纤维,铒离子激发态4I13/2的寿命也在同一数量级(~5 ms)。在这种情况下,上面讨论的玻璃陶瓷纤维似乎是1550nm波段光纤激光器核心的有希望的候选者。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Erbium and ytterbium co-doped transparent oxyfluoride glass-ceramics optical fibers
According to the earlier author’s papers, the erbium/ytterbium co-doped oxyfluoride glass-ceramics fibers should demonstrate better 1550 nm emission under 488/515/980 nm excitation (the erbium Er3+ ion transition 4I13/2→4I15/2) than corresponding glass fibers (the batch composition 48SiO211Al2O3-7Na2CO3-10CaO-10PbO-12PbF2- 1.5/0.6YbF3-0.5/0.2ErF3). Glass fibers provided as a core of standard multimode waveguide (the diameter of 62 μm) have been drawn with the mini-tower to the diameter between 50 μm and 80 μm, then annealed in the two-step regime (580°C/1h – nucleation of nano-crystals; 760oC/15/30 min – nano-crystals growth). This kind of heat treatment ensures the transparent glass-ceramics fibers with the microstructure of homogeneously distributed nano-crystals (lead, erbium and ytterbium enriched cubic fluorite-like crystals and hexagonal PbF2 crystals) embedded in a glassy host. Their transmission covers the range of 80-90% and seems to be sufficient with respect to their provided limited length (~2m). The luminescence intensity for glass-ceramics fibers at 1530 nm is higher than that of respective glass fibers and the lifetimes of the erbium ion excited state 4I13/2 are of the same order (~5 ms). In that context the glass-ceramics fibers discussed above seem to be promising candidates for cores of fiber lasers at the 1550 nm band.
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