Photonic integrated circuits with second-order (χ (2)) nonlinearities are rapidly scaling to
remarkably low powers. At this time, state-of-the-art devices achieve saturated nonlinear …

The rapid development of optical frequency combs from their table-top origins towards chip-
scale platforms has opened up exciting possibilities for comb functionalities outside …

Laser-driven microresonators have enabled chip-integrated light sources with unique
properties, including the self-organized formation of ultrashort soliton pulses and frequency …

Dispersion engineering of microring resonators is crucial for optical frequency comb
applications, to achieve targeted bandwidths and powers of individual comb teeth. However …

Microcavities enable the generation of highly efficient microcombs, which find applications in
various domains, such as high-precision metrology, sensing, and telecommunications. Such …

Microresonator frequency combs (microcombs) hold great potential for precision metrology
within a compact form factor, impacting a wide range of applications such as point-of-care …

On‐chip optical microresonators are essential building blocks in integrated optics. The
ability to arbitrarily engineer their resonant frequencies is crucial for exploring novel physics …

Mode-locked microcombs with flat spectral profiles provide the high signal-to-noise ratio and
are in high demand for wavelength division multiplexing (WDM)-based applications …

Photonic crystals are periodic dielectric structures that possess a wealth of physical
characteristics. Owing to the unique way they interact with the light, they provide new …

Synergistic control of the frequency and orbital angular momentum (OAM) of light offers new
opportunities for the generation of spatio-temporal optical waveforms and optical metrology …