High-and ultrahigh-Q whispering-gallery mode resonators have the capability to trap
photons by total internal reflection for a duration ranging from nanoseconds to milliseconds …

The phenomenon of synchronization occurs universally across the natural sciences and
provides critical insight into the behaviour of coupled nonlinear dynamical systems. It also …

Coupled clocks are a classic example of a synchronization system leading to periodic
collective oscillations. Already in 1665, Christiaan Huygens described this phenomenon as …

Soliton formation in on-chip micro-comb generation balances cavity dispersion and
nonlinearity and allows coherent, low-noise comb operation. We study the intracavity …

Continuously pumped passive nonlinear cavities can be harnessed for the creation of novel
optical frequency combs. While most research has focused on third-order “Kerr” nonlinear …

This paper explores exponential synchronization and phase locking of a Kuramoto-oscillator
network with multi-harmonic coupling functions. In the presence of pacemaker and …

We consider frequency comb generation in dispersive singly resonant second-harmonic-
generation cavity systems. Using a single temporal mean-field equation for the fundamental …

We show that the threshold condition for two pump photons to convert into a pair of the
sideband ones in Kerr microresonators with high-quality factors breaks the pump laser …

Superradiant lasers may soon achieve state-of-the-art frequency purity, with linewidths of 1
mHz or less. In a superradiant (or bad-cavity) laser, coherence is primarily stored in the …

We predict that the free spectral range (FSR) of the soliton combs in microring resonators
can self-lock through the back-action of the Cherenkov dispersive radiation on its parent …