Over the last fifteen years, a series of theoretical and experimental investigations have
demonstrated the usefulness of circular geometries to tailor second‐order nonlinear optical …

We analyze the process of cascaded four-wave mixing in a high-Q microcavity and show
that under conditions of suitable cavity-mode dispersion, broadband frequency combs can …

We demonstrate theoretically and experimentally that under suitable conditions high-Q
microspheres can exhibit anomalous dispersion, which permits phase and energy matching …

We fabricate high-Q arsenic triselenide glass microspheres through a three-step resistive
heating process. We demonstrate quality factors greater than 2x10^ 6 at 1550 nm and …

The theory of surface-second-harmonic generation in a dielectric microsphere using
whispering-gallery modes (WGMs) is developed. The second-order nonlinearity is restricted …

We theoretically investigate how the enhancement of the radiative decay rate of a
spontaneous emitter provided by coupling to an optical antenna is modified when this …

Fluorescent core microcapillary (FCM) structures present an alternative to optofluidic ring
resonators for refractometric or biosensing applications. Instead of a thin-walled capillary …

The polarization behavior of elastic scattering at 1473 nm is analyzed from a silicon
microsphere on an optical fiber half-coupler. The 0.27 nm angular mode spacing of the …

We derive formulas for whispering gallery mode resonances and bending losses in infinite
cylindrical dielectric shells and sets of concentric cylindrical shells. The formulas also apply …

Two original computer codes for the design of rare-earth-doped dielectric microspheres
have been ad hoc developed. The former code is based on a finite-difference time-domain …