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We report a Si3N4 microresonator which simultaneously satisfies single-mode operation, high Q-factor and anomalous dispersion. With controlled high-speed pump-wavelength scanning, we successfully observe a smooth phase-locked Kerr frequency comb transition based on dissipative solitons.
We describe our measurements on high-precision microresonators and microresonator-based optical frequency combs, including full stabilization of planar frequency microcombs, with an instrument-limited instability at 3.6-mHz-per-root-tau and tooth-to-tooth relative uncertainty to 50mHz. Noise in thermally-compensated ultrahigh-Q microresonators and lasers are demonstrated at the thermodynamical limits.
We demonstrate a broadband Kerr frequency comb and mode-locking in a globally-normal-dispersion microresonator. A record short on-chip pulse of 74-fs is directly measured. Supported by analytical theory and numerical modeling, we describe the mode-locking mechanism.
A silicon-based resonant cavity light emitting diode is presented in this paper. Via the microcavity effect, the electroluminescence spectrum is significantly reduced and the emission intensity is enhanced, showing the potential of silicon lighting devices.
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