Science Advances

Supplementary Materials

This PDF file includes:

  • I. Properties of the Si3N4 microresonator.
  • II. Low-noise state of the Kerr frequency comb.
  • III. Confirmation of the continuously equidistant Kerr frequency comb.
  • IV. Dependence of comb spacing on pump properties.
  • V. After-resonator feedback stabilization scheme and measurements.
  • fig. S1. Properties of the Si3N4 microresonator.
  • fig. S2. RF amplitude noise spectra of the high-noise state and the low-noise phase-locked comb state.
  • fig. S3. Confirmation of the continuously equidistant Kerr frequency comb.
  • fig. S4. Dependence of comb spacing on pump properties.
  • fig. S5. Schematic of the alternative experimental setup for the generation and stabilization of the chip-scale optical frequency comb.
  • References (38–41)

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