Femtosecond laser inscription or writing has been recognized as a powerful technique to
engineer various materials toward a number of applications. By efficient modification of …

Femtosecond laser pulses have been extensively employed to achieve 3D micro‐and
nanofabrication in various materials for a broad variety of applications. LiNbO3 crystal is a …

A nonlinear photonic crystal (NPC) possesses space-dependent second-order nonlinear
coefficients, which can effectively control nonlinear optical interactions through quasi-phase …

The performance of many optical devices based on frequency conversion critically depends
on spatial modulation of the nonlinear optical response of materials. This modulation …

Nonlinear photonic crystals are microstructures with quadratic nonlinearity (χ (2)) that have
been extensively used for the generation and control of coherent light at new frequencies …

Femtosecond (Fs) laser micro-/nano-fabrication technology allows direct definition of on-
demand nanostructures with three-dimensional (3D) geometric features and tailored …

Generation of coherent light with desirable amplitude and phase profiles throughout the
optical spectrum is a key issue in optical technologies. Nonlinear wavefront shaping offers …

Lithium niobate on insulator (LNOI), by taking advantage of versatile properties of lithium
niobate (LN) and a large refractive index contrast, provides an ideal on-chip platform for …

Thin ferroelectric materials hold great promise for compact nonvolatile memory and
nonlinear optical and optoelectronic devices. Herein, an ultrathin in‐plane ferroelectric …

The geometric phase of light has been demonstrated in various platforms of the linear
optical regime, raising interest both for fundamental science as well as applications, such as …