拓扑光学频率梳
Topological Optical Frequency Combs
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中文总结 AI 辅助
本文回顾光学频率梳的发展，重点介绍拓扑光学频率梳的理论提出（2021年）与实验实现（2024年），并探讨其研究挑战与机遇。
中文摘要 AI 辅助
光学频率梳（OFCs）是一种革命性的光源，其特征是离散且等间距的光谱线，已在计量学、光谱学和通信领域得到广泛应用。早期，OFCs 通过锁模激光器实现。随着高品质因子（$Q$）微谐振器制造技术的进步以及对小型化、可集成光子芯片需求的日益增长，基于微谐振器的 OFCs（通常称为微梳）得以发展。尽管微梳的早期研究主要集中于单个微谐振器或少数谐振器，但 2021 年出现了一项重大突破：理论上预测，在环形谐振器阵列的拓扑边缘通道中传播的光可以产生嵌套频率梳，即拓扑 OFCs。此后，拓扑 OFCs 领域迅速发展，并于 2024 年实现了实验观测。本展望将介绍 OFCs 的历史，特别强调拓扑 OFCs 的出现与发展，并探讨与之相关的研究挑战和机遇。
英文摘要
Optical frequency combs (OFCs) are revolutionary light sources characterized by discrete and equally spaced spectral lines, and they have found widespread applications in metrology, spectroscopy, and communications. In the early stages, OFCs were realized using mode-locked lasers. With advancements in the fabrication of high-quality factor ($Q$) microresonators and the increasing demand for miniaturized and integrable photonic chips, microresonator-based OFCs, commonly referred to as microcombs, have been developed. Although early studies of microcombs primarily focused on single microresonators or a few resonators, a significant breakthrough occurred in 2021 when it was theoretically predicted that light propagating in the topological edge channel of an array of ring resonators could generate nested frequency combs known as topological OFCs. Since then, the field of topological OFCs has progressed rapidly, with experimental observations made in 2024. This Perspective will introduce the history of OFCs, placing particular emphasis on the emergence and development of topological OFCs, as well as exploring the research challenges and opportunities associated with them.
发表机构
- National Key Laboratory of Radar Detection and Sensing, School of Electronic Engineering, Xidian University（西安电子科技大学电子工程学院雷达探测与感知技术国家重点实验室）
- State Key Laboratory of Ultrafast Optical Science and Technology, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences（中国科学院西安光学精密机械研究所超快光学科学与技术国家重点实验室）
- University of Chinese Academy of Sciences（中国科学院大学）
机构由 AI 辅助整理，请以论文原文为准。
