发表机构
KTH Royal Institute of Technology; Australian National University（皇家理工学院; 澳大利亚国立大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文提出利用码分复用无源光纤干涉仪实现85 GHz间隔激光的高稳定频率转移，达到sub-kHz/√Hz噪声上限和7×10⁻¹³稳定度，并支持连续调谐与多激光扩展。
AI 中文摘要
高稳定性的激光间频率稳定化对于精密计量、频率分发和量子通信等应用至关重要。我们演示了基于码分复用的无源光纤干涉仪，用于频率稳定化和在频率上相隔85 GHz的激光之间的转移，仅使用一个共享的无源参考。环外表征将转移频率噪声的上限设定为在傅里叶频率高于40 mHz时低于sub-kHz/√Hz，且在1秒时的差分分数稳定度为7×10⁻¹³。我们还演示了连续的激光可调性，并表征了残余长度噪声耦合。最后，我们提供了一个框架，用于将该架构扩展到更高的激光数量，为多个光源的可扩展、频率敏捷稳定化提供了路径，而无需光学频率梳的开销。
英文摘要
High-stability frequency stabilization between lasers is essential for applications such as precision metrology, frequency dissemination, and quantum communications. We demonstrate the use of code-based multiplexing of a passive fiber-based interferometer for frequency stabilization and transfer between lasers separated by 85 GHz in frequency using a single shared passive reference. Out-of-loop characterization places an upper bound of sub-kHz/$\sqrt{\text{Hz}}$ on the transferred frequency noise at Fourier frequencies above 40 mHz, with a differential fractional stability of $7\times10^{-13}$ at 1 second. We also demonstrate continuous laser tunability and characterize the residual length noise coupling. Finally, we provide a framework for scaling the architecture to higher laser counts, offering a pathway to scalable, frequency agile stabilization of multiple light sources without the overhead of an optical frequency comb.
Comments23 pages, 7 figures
