The growing maturity of nanofabrication has ushered massive sophisticated optical
structures available on a photonic chip. The integration of subwavelength-structured …

Control over the dispersion of the refractive index is essential to the performance of most
modern optical systems. These range from laboratory microscopes to optical fibres and even …

A key goal of metalens research is to achieve wavefront shaping of light using optical
elements with thicknesses on the order of the wavelength. Such miniaturization is expected …

We present a method allowing for the imposition of two independent and arbitrary phase
profiles on any pair of orthogonal states of polarization—linear, circular, or elliptical—relying …

Dispersion results from the variation of index of refraction as well as electric field
confinement in sub-wavelength structures. It usually results in efficiency decrease in …

Structured light is derived from the ability to tailor light, usually referring to the spatial control
of its amplitude, phase, and polarization. Although a venerable topic that dates back to the …

Polarization, the path traced by light's electric field vector, appears in all areas of optics. In
recent decades, various technologies have enabled the precise control of light's polarization …

Bessel beams are of great interest due to their unique non-diffractive properties. Using a
conical prism or an objective paired with an annular aperture are two typical approaches for …

Lenses with tunable focal length play important roles in nature by helping species avoid
predators and capture prey. Many practical devices mimic lens concept for imaging, sensing …

From its inception holography has proven an extremely productive and attractive area of
research. While specific technical applications give rise to 'hot topics', and three-dimensional …