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 …

We review the progress in the development of frequency converters based on three‐wave
mixing in whispering gallery resonators (WGRs). The theoretical description, given in a …

Optical whispering gallery modes (WGMs) derive their name from a famous acoustic
phenomenon of guiding a wave by a curved boundary observed nearly a century ago. This …

Optical parametric oscillators (OPOs) have been widely used for decades as tunable, narrow-
linewidth, and coherent light sources for reaching long wavelengths and are attractive for …

We demonstrate cascaded Stimulated Raman Scattering (SRS), Second-Harmonic
Generation (SHG), and Sum-Frequency Generation (SFG) in integrated on-chip whispering …

Chip-integrated whispering-gallery resonators (WGRs) enable compact and wavelength-
agile nonlinear optical frequency synthesizers. So far, the most flexible phase-matching …

The on-chip generation of coherent, single-frequency laser light that can be tuned across the
visible spectrum would help enable a variety of applications in spectroscopy, metrology, and …

Optical microresonators are ideal tools for the reduction of the threshold of optical parametric
oscillation based on four-wave mixing. Usually, the efficiency and bandwidth of the resonant …

Optical parametric oscillators are widely used to generate coherent light at frequencies not
accessible by conventional laser gain. However, chip-based parametric oscillators operating …

We theoretically study the generation of optical frequency combs and corresponding pulse
trains in doubly resonant intracavity second-harmonic generation (SHG). We find that …