The physics and applications of fiber-based supercontinuum (SC) sources have been a subject of intense interest over the last decade, with significant impact on both basic science and industry. New uses for SC sources are also constantly emerging due to their unique properties that combine high brightness, multi-octave frequency bandwidth, fiber delivery, and single-mode output. The last few years have seen significant research efforts focused on extending the wavelength coverage of SC sources towards the 2 to $20\,\,\unicode{x00B5}{\rm m}$ molecular fingerprint mid-infrared (MIR) region and in the ultraviolet (UV) down to 100 nm, while also improving stability, noise and coherence, output power, and polarization properties. Here we review a selection of recent advances in SC generation in a range of specialty optical fibers, including fluoride, chalcogenide, telluride, and silicon-core fibers for the MIR; UV-grade silica fibers and gas-filled hollow-core fibers for the UV range; and all-normal dispersion fibers for ultralow-noise coherent SC generation.

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特种光纤超连续谱产生的最新进展[特邀]

在过去的十年中，基于光纤的超连续谱 (SC) 光源的物理学和应用一直是一个备受关注的主题，对基础科学和工业都产生了重大影响。SC 光源的新用途也不断出现，因为它们结合了高亮度、多倍频程频率带宽、光纤传输和单模输出的独特特性。在过去的几年里，大量的研究工作集中在将 SC 光源的波长覆盖范围扩展到 2美元到20 美元\,\,\unicode{x00B5}{\rm m}$分子指纹中红外 (MIR) 区域和低至 100 nm 的紫外 (UV) 区域，同时还提高了稳定性、噪声和相干性、输出功率和偏振特性。在这里，我们回顾了一系列特种光纤中 SC 生成的最新进展，包括用于 MIR 的氟化物、硫族化物、碲化物和硅芯光纤；UV 级石英光纤和充气空芯光纤，适用于 UV 范围；和用于超低噪声相干 SC 生成的全正常色散光纤。