A method based on sol-gel preparation combined with silica tube inner wall coating and fusion-tapering technique for fabrication of ultrahighly rare-earth-doped fibers without fluorescent quenching is provided. Ultrahighly Yb-doped high SiO₂ content glass fiber is developed and is easily spliced to commercial fiber-components. A ~ 1.03 μm laser with 70 dB-SNR and 0.2 nm-linewidth is achieved. The problem of low dissolution rate to rare-earth ions in silica fibers and the splicing problem between soft glass fibers and commercial fiber components have been overcome, indicating the method has potential in fabrication of short-cavity high-gain silica fiber which is applicable to single-frequency seed source. The method is worth exploring in that the core can extend to any heavily rare-earth-doped system as long as it can be realized in the sol form with good dispersion, therefore paving way for fabrication of silica-based single-frequency seed laser.

提供了一种基于溶胶-凝胶制备结合二氧化硅管内壁涂层和​​熔融锥化技术的方法，该方法无需荧光猝灭即可制备超高掺稀土纤维。超高Yb掺杂高SiO ₂含量高的玻璃纤维被开发出来，并且很容易与商用纤维组分拼接。可获得具有70 dB-SNR和0.2 nm线宽的〜1.03μm激光器。克服了二氧化硅纤维中稀土离子溶解速率低的问题以及软玻璃纤维与市售纤维组分之间的拼接问题，表明该方法具有制造短腔高增益二氧化硅纤维的潜力。单频种子源。该方法值得探索，因为只要可以以具有良好分散性的溶胶形式实现，纤芯就可以扩展到任何重稀土掺杂的系统，因此为制造基于二氧化硅的单频种子激光器铺平了道路。