A stabilized chip-scale Kerr frequency comb via a high-Q reference photonic microresonator

Abstract

We stabilize a chip-scale Si3N4 phase-locked Kerr frequency comb via locking the pump laser to an independent stable high-Q reference microresonator and locking the comb spacing to an external microwave oscillator. In this comb, the pump laser shift induces negligible impact on the comb spacing change. This scheme is a step towards miniaturization of the stabilized Kerr comb system as the microresonator reference can potentially be integrated on-chip. Fractional instability of the optical harmonics of the stabilized comb is limited by the microwave oscillator used for comb spacing lock below 1 s averaging time and coincides with the pump laser drift in the long term.

4 pages,5 figures

References in corpus (4)

• Optical combs with a crystalline whispering gallery mode resonator
• Full Stabilization of a Microresonator based Optical Frequency Comb
• Low-Pump-Power, Low-Phase-Noise, and Microwave to Millimeter-wave Repetition Rate Operation in Microcombs
• Mode-locked ultrashort pulse generation from on-chip normal dispersion microresonators

Cited by in corpus (1)

• Probing 10 μK stability and residual drifts in the cross-polarized dual-mode stabilization of single-crystal ultrahigh-Q optical resonators