Zektzer Roy, Hummon Matthew T, Stern Liron, Sebbag Yoel, Barash Yefim, Mazurski Noa, Kitching John, Levy Uriel
Department of Applied Physics, The Benin School of Engineering and Computer Science, The Center for Nanoscience and Nanotechnology The Hebrew University of Jerusalem Jerusalem 91904, Israel.
Time and Frequency Division National Institute of Standards and Technology 325 Broadway Boulder, CO 80305, USA.
Laser Photon Rev. 2020;14(6). doi: 10.1002/lpor.201900414.
Lasers precisely stabilized to known transitions between energy levels in simple, well-isolated quantum systems such as atoms and molecules are essential for a plethora of applications in metrology and optical communications. The implementation of such spectroscopic systems in a chip-scale format would allow to reduce cost dramatically and would open up new opportunities in both photonically integrated platforms and free-space applications such as lidar. Here the design, fabrication, and experimental characterization of a molecular cladded waveguide platform based on the integration of serpentine nanoscale photonic waveguides with a miniaturized acetylene chamber is presented. The goal of this platform is to enable cost-effective, miniaturized, and low power optical frequency references in the telecommunications C band. Finally, this platform is used to stabilize a 1.5 μm laser with a precision better than 400 kHz at 34 s. The molecular cladded waveguide platform introduced here could be integrated with components such as on-chip modulators, detectors, and other devices to form a complete on-chip laser stabilization system.
对于计量学和光通信中的大量应用而言，精确稳定到简单、良好隔离的量子系统（如原子和分子）中能级之间已知跃迁的激光器至关重要。以芯片规模形式实现此类光谱系统将大幅降低成本，并在光子集成平台和诸如激光雷达等自由空间应用中开辟新机遇。本文介绍了一种基于蛇形纳米级光子波导与小型乙炔腔集成的分子包覆波导平台的设计、制造和实验表征。该平台的目标是在电信C波段实现经济高效、小型化且低功耗的光频参考。最后，该平台用于在34秒内将1.5μm激光器稳定到优于400kHz的精度。这里介绍的分子包覆波导平台可与诸如片上调制器、探测器和其他器件等组件集成，以形成完整的片上激光稳定系统。
