锥形光纤法布里-珀罗腔用于产生近可见、相位锁定和宽带Kerr频率梳
Tapered Fibre Fabry-Pérot Cavities for the Generation of Near-Visible, Phase-locked, and Broadband Kerr Frequency Combs
- The University of Auckland（奥克兰大学）
- The Dodd-Walls Centre for Photonic and Quantum Technologies（多德-沃尔斯光子与量子技术中心）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
本文利用锥形光纤法布里-珀罗腔实现近可见宽带Kerr频率梳，通过几何色散工程克服正常色散并增强非线性，实验和数值展示了多种相位锁定孤子结构，为可见光频率梳提供新平台。
AI中文摘要：
我们演示了使用锥形光纤法布里-珀罗谐振器产生近可见、宽带Kerr频率梳。通过将微米直径的锥形二氧化硅光纤纳入脉冲驱动的法布里-珀罗配置中，我们利用几何色散工程来克服二氧化硅（以及几乎所有材料）在短波长处固有的强正常色散，在近可见光区域实现净反常色散。锥形光纤的强模式限制同时将Kerr非线性相对于标准光纤增强了一个数量级以上，显著降低了非线性结构形成的阈值驱动功率。通过精确控制腔体制造，我们实验演示并数值确认了一系列丰富的相干、相位锁定非线性结构，包括常规反常色散腔孤子、光谱带宽超过16 THz（在750 nm至800 nm之间）的零色散孤子，以及切换波梳和宽带拉曼孤子，后者也是首次在近可见光区域报道。我们的结果确立了锥形光纤法布里-珀罗谐振器作为近可见及潜在可见相干频率梳产生的多功能平台。
英文摘要：
We demonstrate the generation of near-visible, broadband Kerr frequency combs using a tapered fibre Fabry-Pérot resonator. By incorporating micron-diameter tapered silica fibre into a pulsed-driven Fabry-Pérot configuration, we exploit geometric dispersion engineering to overcome the strong normal dispersion intrinsic to silica (and nearly all materials) at short wavelengths, achieving net anomalous dispersion in the near-visible regime. The strong mode confinement of the tapered fibre simultaneously enhances the Kerr nonlinearity by over an order of magnitude relative to standard fibre, substantially reducing the threshold drive power for nonlinear structure formation. Through precise control of the cavity fabrication, we experimentally demonstrate and numerically confirm a rich suite of coherent, phase-locked nonlinear structures, including conventional anomalous dispersion cavity solitons, zero dispersion solitons with spectral bandwidths exceeding 16 THz between 750 nm and 800 nm, as well as switching wave combs and broadband Raman solitons, the latter also reported here for the first time in the near-visible regime. Our results establish the tapered fibre Fabry-Pérot resonator as a versatile platform for near-visible and potentially visible coherent frequency comb generation.
