Optical materials with centrosymmetry, such as silicon and germanium, are unfortunately
absent of second‐order nonlinear optical responses, hindering their developments in …

We present the first demonstration of frequency conversion by simultaneous second-and
third-harmonic generation in a silicon photonic crystal nanocavity using continuous-wave …

By combining analytical and numerical approaches, we study resonantly enhanced second-
harmonic generation by individual high-index dielectric nanoparticles made of …

Nonlinear dielectric metasurfaces provide a promising approach to control and manipulate
frequency conversion optical processes at the nanoscale, thus facilitating both advances in …

In the present review, we consider in detail nonlinear-optical properties of porous silicon.
The nonlinear-optical properties of porous silicon are discussed in close connection with its …

Second-harmonic generation (SHG) from nanoparticles made of centrosymmetric materials
provides an effective tool to characterize many important properties of photonic structures at …

We investigate the influence of the wavelength, within the 1.3 μm–1.63 μm range, on the
second-order optical nonlinearity in silicon waveguides strained by a silicon nitride …

Although silicon does not possess a dipolar bulk second order nonlinear susceptibility due
to its centro-symmetric crystal structure, in recent years several attempts were undertaken to …

Reaching the optimal second‐and third‐order nonlinear conversion efficiencies while
avoiding undesirable free carrier absorption losses and material damage in ultrashort laser …

We investigate second harmonic generation from individual silicon nanowires and study the
influence of resonant optical modes on the far field nonlinear emission. We find that the …