The term whispering gallery mode (WGM) was first introduced to describe the curvilinear
propagation of sound waves under a cathedral dome. The physical concept has now been …

Recent advancements in computational inverse-design approaches—algorithmic
techniques for discovering optical structures based on desired functional characteristics …

Lithium niobate (LiNbO3) on insulator (LNOI) is a promising material platform for integrated
photonics due to single crystal LiNbO3 film's wide transparent window, high refractive index …

Crystalline lithium niobate (LN) is an important optical material because of its broad
transmission window that spans from ultraviolet to mid-infrared and its large nonlinear and …

Lithium niobate (LN), dubbed by many as the silicon of photonics, has recently risen to the
forefront of chip-scale nonlinear optics research since its demonstration as an ultralow-loss …

Optical metasurfaces, ie arrays of nanoantennas with sub-wavelength size and separation,
enable the manipulation of light-matter interactions in miniaturized optical components with …

Second-order nonlinear optical processes lie at the heart of many applications in both
classical and quantum regimes,–. Inversion symmetry, however, rules out the second-order …

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 reveal a unique broadband natural quasi-phase-matching (QPM) mechanism underlying
an observation of highly efficient second-and third-order harmonic generation at multiple …

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 …