Fresnel zone plates consisting of multiple concentric rings have been realized by tailoring
amplitude, phase and polarization of light, but conventional Fresnel zone plates require …

In this paper, an effect of a reverse energy flow at the focus of a second-order cylindrical
vector beam which passed through amplitude zone plate was investigated with a scanning …

In this Letter, a novel, to the best of our knowledge, structural configuration on a transparent
microsphere is proposed to engineer the focusing light field. By patterning a hybrid …

The circular Fresnel zone plate (FZP) has been extensively used in micro-optics due to its
outstanding focusing performance. Despite that, the curved edge of the circular zone has …

We have studied the behavior of light in the intermediate regime between a single nanoslit
and an infinite nanoslit array. We first calculated the optical characteristics of a small number …

In this study, we theoretically and experimentally investigate the propagation of a second-
order cylindrical vector beam through an aluminum lens which forms a tight focus at the …

We investigate the radiation characteristics of radially polarized light and azimuthally
polarized light through plasmonic subwavelength-scale annular slit (PSAS) structures, by …

In this work, we present a bifocal Fresnel zone plate (BiFZP) capable of generating focusing
profiles with two different foci. The performance of the BiFZP is demonstrated in the …

The multiple focal patterns such as longitudinally/transversely polarized multiple focal
spots/holes, longitudinally/transversely polarized annular dark multiple spots with petal …

This study presents an innovative inline metasurface design for selective wavelength
transmission and focusing. When integrated into optical fibers, it improves the stability and …