The presence of tiny holes in an opaque metal film, with sizes smaller than the wavelength
of incident light, leads to a wide variety of unexpected optical properties such as strongly …

This Colloquium analyzes the interaction of light with two-dimensional periodic arrays of
particles and holes. The enhanced optical transmission observed in the latter and the …

Optical skyrmions have recently been constructed by tailoring vectorial near-field
distributions through the interference of multiple surface plasmon polaritons, offering …

We report that normal incidence transmission of circularly polarized waves through the lossy
anisotropic planar chiral structure is asymmetric in the opposite direction. The new effect is …

Observation of surface-plasmon phenomena that are dependent upon the handedness of
the circularly polarized incident light (spin) is presented. The polarization-dependent near …

We show that in the visible to near-IR part of the spectrum, normal incidence transmission of
circularly polarized light through a nanostructured anisotropic planar chiral metamaterial is …

With properties not previously available, optical metamaterials and metasurfaces have
shown their great potential in the precise control of light waves at the nanoscale. However …

The authors demonstrate a mechanism for focusing at optical frequencies based on the use
of nanohole quasiperiodic arrays in metal screens. Using coherent illumination at 660 nm …

A simple spiral plasmonic lens is studied both analytically and numerically. Owing to the
geometric phase effect, a spiral plasmonic lens focuses the left-hand and right-hand circular …

We demonstrate that a quasi-crystal array of nanoholes in a metal screen can mimic a
function of the lens: one-to-one imaging of a point source located a few tens of wavelengths …