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

Whispering-gallery-mode (WGM) microresonators can dramatically boost the interaction
between light and matter, making them an ideal platform for studying nonlinear optics …

In this work, we report a highly efficient and tunable on-chip sum-frequency generation
(SFG) on a thin-film lithium niobate platform via modal phase matching (e+ e→ e). It provides …

In this paper, we demonstrate efficient spontaneous quasi-phase matched (SQPM) second
harmonic generation (SHG) in a micro-racetrack resonator on X-cut thin film lithium niobate …

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

Whispering-gallery-mode (WGM) microcavities are very important in both fundamental
science and practical applications, among which on-chip second-order nonlinear …

The crystal symmetry in materials such as GaAs can enable quasi-phasematching for
efficient optical frequency conversion without poling, twinning or other engineered domain …

Whispering-gallery-mode microresonators, one of the most important components of
photonic integrated circuits, have the ability to dramatically boost light–matter interactions. In …

We demonstrate for the first time natural phase matching for optical frequency doubling in a
high-Q whispering-gallery-mode resonator made of lithium niobate. A conversion efficiency …

Phase-matched nonlinear wave mixing, eg, second-harmonic generation (SHG), is crucial
for frequency conversion for integrated photonics and applications, where phase matching …