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656 W Er-doped, Yb-free large-core fiber laser

机译:656 W ER掺杂,无YB大核光纤激光器

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摘要

A continuous-wave erbium-doped ytterbium-free fiber laser generates a record-breaking pump-power-limited output power of 656 W at similar to 1601 nm when cladding pumped by 0.98 mu m diode lasers. The slope efficiency was 35.6% with respect to launched pump power, and the beam quality factor (M-2) was similar to 10.5. This M-2 value excludes a fraction similar to 25% of the power that emerged from the cladding, which we attribute in part to mode coupling between the 146 mu m core and 700 mu m inner cladding. Whereas these parameters are adequate for in-band tandem pumping of Tm-doped fiber lasers, we predict that an output power of over 1 kW is possible through pumping with state-of-the-art 0.98 mu m diode lasers, even with a smaller core that allows for improved beam quality. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License.
机译:当包层泵送0.98μm二极管激光器时,连续波掺杂的无卵形纤维激光器产生656W的记录泵功率限制输出功率,与1601nm相似。 相对于发射的泵功率,斜率效率为35.6%,光束质量因数(M-2)类似于10.5。 该M-2值不包括与覆层出来的25%的级分,我们将其部分地耦合在146μm核心和700μm内包层之间。 然而,这些参数足以用于TM掺杂光纤激光器的带内串联泵送,我们预测,通过用最先进的0.98 mu m二极管激光泵送,可以通过泵送超过1kW的输出功率,即使具有较小的 允许改善光束质量的核心。 光学社会在创意公约归因4.0许可的条款下发表。

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  • 来源
    《Optics Letters》 |2018年第13期|共4页
  • 作者单位

    Univ Southampton Optoelect Res Ctr Southampton SO17 1BJ Hants England;

    Univ Southampton Optoelect Res Ctr Southampton SO17 1BJ Hants England;

    Univ Southampton Optoelect Res Ctr Southampton SO17 1BJ Hants England;

    Univ Southampton Optoelect Res Ctr Southampton SO17 1BJ Hants England;

    Univ Southampton Optoelect Res Ctr Southampton SO17 1BJ Hants England;

    Univ Southampton Optoelect Res Ctr Southampton SO17 1BJ Hants England;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 计量学;光学;
  • 关键词

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