Cherenkov radiation induced symmetry breaking in counter propagating dissipative Kerr solitons
arXiv:1905.01771 · doi:10.1103/PhysRevLett.123.253902
Abstract
The process of soliton Cherenkov radiation (also known as dispersive wave emission) in microresonator frequency combs plays a critical role in generating broadband and coherent microcomb spectra. Here, we report the observation of symmetry breaking in the group velocity of counter-propagating dissipative Kerr solitons, induced by polychromatic soliton Cherenkov radiation. Results show that in the presence of higher-order dispersion, the temporal arrangement of a multi-soliton state affects its group velocity, an effect which originates from the interference between multiple radiative tails emitted by individual solitons. Experimentally, we bidirectionally pump a microresonator with laser fields of equal power and frequency, and observe lifting of the degeneracy between the repetition rates of the counter-propagating solitons. The observation of symmetry breaking despite symmetric pumping conditions not only shines new light on the impact of dispersive waves on dissipative Kerr soliton dynamics, but also introduces a novel approach to develop coherent dual-comb spectrometers based on microcombs.
arXiv comment11 pages, 10 figures
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- A hierarchy of coupled mode and envelope models for bi-directional microresonators with Kerr nonlinearity
- Threshold of complexity and Arnold tongues in Kerr ring microresonators
- Universal threshold and Arnold tongues in Kerr ring microresonators
- Forced Oscillatory Motion of Trapped Counter-Propagating Solitons
- Photonic Snake States in Two-Dimensional Frequency Combs
- Soliton blockade in bidirectional microresonators
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