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Complete phase stabilization of a chip-integrated self-injection-locked microresonator frequency comb is presented for the first time. We utilize recently demonstrated synthetic-reflection self-injection locking to guarantee deterministic access to single soliton microcomb. The microcomb offset frequency is phase-locked via the diode current to an external optical reference, while the repetition rate is phase-locked via a micro-heater to an RF oscillator. Both locks only require low-voltage, CMOS-compatible signals. This demonstration paves the way for metrological-grade chip-integrated optical frequency comb sources.
Alexander Ulanov,Thibault Wildi,Bastian Ruhnke, andTobias Herr
"Complete phase stabilization of self-injection locked microcomb", Proc. SPIE PC13004, Nonlinear Optics and its Applications 2024, PC130040R (20 June 2024); https://doi.org/10.1117/12.3023212
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Alexander Ulanov, Thibault Wildi, Bastian Ruhnke, Tobias Herr, "Complete phase stabilization of self-injection locked microcomb," Proc. SPIE PC13004, Nonlinear Optics and its Applications 2024, PC130040R (20 June 2024); https://doi.org/10.1117/12.3023212