论文标题
300 GHz波，带有Attosent级的时机噪声
300 GHz wave with attosecond-level timing noise
论文作者
论文摘要
通过光频梳（OFC）的光频分割（OFD）使微波计量学的飞跃导致了以前从未探索过的噪声性能。将方法扩展到毫米波（MMW）和Terahertz（THZ） - 波浪域引起了极大的关注。集成光子芯片中的耗散性Kerr孤子（DKSS）提供了从10 GHz到1 THz的超高重复速率的OFC的独特功能，使它们在MMW和THZ-WAVE域中执行OFD的相关齿轮。我们通过实验证明了通过DKS的DKS降至300 GHz的OFD，并用超快的Uni-Traveling-Carrir-Carrier光电二极管（UTC-PD）进行了光检查。基于对正在测试的300 GHz信号的微波参考相锁定的微波参考相锁定的新测量系统，可产生attsecond级的时序噪声灵敏度，利用常规的技术限制。这项工作将DKS作为MMW和THZ波领域的领先技术，在基本和平民应用中有希望的突破。
Optical frequency division (OFD) via optical frequency combs (OFC) has enabled a leap in microwave metrology leading to noise performance never explored before. Extending the method to millimeter-wave (mmW) and terahertz (THz)-wave domain is of great interest. Dissipative Kerr solitons (DKSs) in integrated photonic chips offer a unique feature of delivering OFCs with ultrahigh repetition rates from 10 GHz to 1 THz making them relevant gears to perform OFD in the mmW and THz-wave domain. We experimentally demonstrate OFD of an optically-carried 3.6 THz reference down to 300 GHz through a DKS, photodetected with an ultrafast uni-traveling-carrier photodiode (UTC-PD). A new measurement system, based on the characterization of a microwave reference phase-locked to the 300 GHz signal under test, yields attosecond-level timing noise sensitivity, leveraging conventional technical limitations. This work places DKSs as a leading technology in the mmW and THz-wave field promising breakthroughs in fundamental and civilian applications.
