The ability of light to carry and deliver orbital angular momentum (OAM) in the form of optical
vortices has attracted much interest. The physical properties of light with a helical wavefront …

In the past decade, optical orbital angular momentum (OAM) has entered the field of
plasmonics in the form of surface-confined vortices, generating vast interest. Here we give …

Near-field scanning optical microscopy (NSOM) enables observation of light-matter
interaction with a spatial resolution far below the diffraction limit without the need for a …

Orbital angular momentum of light is a core feature in photonics. Its confinement to surfaces
using plasmonics has unlocked many phenomena and potential applications. Here, we …

Metasurfaces have shown unprecedented capabilities in manipulating the phase, intensity,
and polarization of electromagnetic waves. The coupling efficiency of surface plasmon …

Conventional plasmonic lenses are composed of curved slits carved through metallic films.
Here, we propose a new plasmonic lens based on a metallic slit with an auxiliary groove …

Wavefield manipulation of surface plasmon polaritons (SPPs) is one of the fundamental
subjects in nanophtonics. In this paper, based on the analyses of the plasmonic and …

Purpose of this work is the excitation and manipulation of surface plasmon polaritons on
atomically flat and single crystalline gold platelets, deposited on doped silicon substrates …