标题： 完全集成的超低功耗克尔光梳生成 显示英文标题

标题： Fully integrated ultra-low power Kerr comb generation

摘要： 光学频率梳是宽带光源，它们提供了相互相干、等间距的光谱线，在频率和时间方面具有前所未有的精确性，适用于各种应用。 微谐振器中的克尔频率梳需要单频泵浦激光器，并提供了高度紧凑、可扩展且节能设备的前景。 在这里，我们通过使用极低损耗的氮化硅波导实现这一前景，这些波导既形成微谐振器又形成集成激光腔。 我们的器件仅使用98毫瓦的电泵浦功率即可生成跨越超过100纳米的低噪声孤子锁模频率梳。 我们的设计基于一种新型双腔结构，展示了完全集成所带来的灵活性。 实现超低功耗的完全集成克尔梳源，带来了高度便携和稳健的频率和时间参考、传感器和信号源的可能性。 它还通过微谐振器和激光器的紧密芯片集成，为研究频率梳和孤子生成的动力学提供了新的工具。 显示英文摘要

摘要： Optical frequency combs are broadband sources that offer mutually-coherent, equidistant spectral lines with unprecedented precision in frequency and timing for an array of applications. Kerr frequency combs in microresonators require a single-frequency pump laser and have offered the promise of highly compact, scalable, and power efficient devices. Here, we realize this promise by demonstrating the first fully integrated Kerr frequency comb source through use of extremely low-loss silicon nitride waveguides that form both the microresonator and an integrated laser cavity. Our device generates low-noise soliton-modelocked combs spanning over 100 nm using only 98 mW of electrical pump power. Our design is based on a novel dual-cavity configuration that demonstrates the flexibility afforded by full integration. The realization of a fully integrated Kerr comb source with ultra-low power consumption brings the possibility of highly portable and robust frequency and timing references, sensors, and signal sources. It also enables new tools to investigate the dynamics of comb and soliton generation through close chip-based integration of microresonators and lasers.