Journal
FRONTIERS IN PHYSICS
Volume 10, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fphy.2022.908141
Keywords
microresonator; mode splitting; optical frequency comb; self-oscillation; optical soliton
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Funding
- National Natural Science Foundation of China [62075238]
- West Light Foundation of the Chinese Academy of Sciences [E0291113]
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This study experimentally demonstrates the formation of self-oscillation microcombs in a microresonator and observes the spontaneous symmetry breaking and self-oscillation phenomenon. By tuning the pump detuning, the breathing soliton and stable soliton states can switch to each other, providing a reliable scheme for breather soliton microcomb generation.
Self-oscillation and bifurcation as many-body dynamics solutions in a high-Q microresonator have induced substantial interest in nonlinear optics and ultrafast science. Strong mode coupling between clockwise (CW) wave and counterclockwise (CCW) wave induces mode-splitting and optical self-oscillation in the optical cavity. This study experimentally demonstrates the self-oscillation microcomb formation in a microresonator with strong backward Rayleigh scattering. When a pump laser sweeps across a resonance, both spontaneous symmetry breaking (SSB) and self-oscillation phenomenon are observed. The breathing soliton and stable soliton state can switch to each other through careful tuning of the pump detuning. Our experiments provide a reliable scheme for breather soliton microcomb generation. Meanwhile, the rich physics process enhances the comprehension of nonlinear optics in a cavity.
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