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Battery-operated integrated frequency comb generator

机译:电池供电的集成频率梳发生器

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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(1). Frequency combs generated in microresonators through the Kerr nonlinearity require a single-frequency pump laser and have the potential to provide highly compact, scalable and power-efficient devices(2.3). Here we demonstrate a device-a laser-integrated Kerr frequency comb generator-that fulfils this potential 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-mode-locked combs with a repetition rate of 194 gigahertz at wavelengths near 1,550 nanometres using only 98 milliwatts of electrical pump power. The dual-cavity configuration that we use combines the laser and microresonator, demonstrating the flexibility afforded by close integration of these components, and together with the ultra low power consumption should enable production of highly portable and robust frequency and timing references, sensors and signal sources. This chip-based integration of microresonators and lasers should also provide tools with which to investigate the dynamics of comb and soliton generation.
机译:光学频率梳是一种宽带光源,可为一系列应用提供互相干,等距的频谱线,其频率和时序具有前所未有的精度(1)。通过Kerr非线性在微谐振器中产生的频率梳需要一个单频泵浦激光器,并且有潜力提供高度紧凑,可扩展且高能效的设备(2.3)。在这里,我们演示了一种设备,一种激光集成的Kerr频率梳状发生器,该设备通过使用形成微谐振器和集成激光腔的极低损耗的氮化硅波导来实现这一潜力。我们的设备仅使用98毫瓦的泵浦功率即可产生波长为1,550纳米的低噪声孤子锁模梳,其重复频率为194 GHz。我们使用的双腔配置结合了激光器和微谐振器,证明了这些组件的紧密集成所提供的灵活性,以及​​超低的功耗,应该能够生产出高度便携且坚固的频率和时序基准,传感器和信号源。微谐振器和激光器的这种基于芯片的集成还应该提供用于研究梳和孤子产生动力学的工具。

著录项

  • 来源
    《Nature》 |2018年第7727期|401-405|共5页
  • 作者单位

    Cornell Univ, Sch Elect & Comp Engn, Ithaca, NY USA;

    Cornell Univ, Sch Elect & Comp Engn, Ithaca, NY USA;

    Columbia Univ, Dept Appl Phys & Appl Math, New York, NY USA;

    Columbia Univ, Dept Appl Phys & Appl Math, New York, NY USA;

    Columbia Univ, Dept Elect Engn, New York, NY 10027 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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