Axicon is a versatile optical element for forming a zero-order Bessel beam, including high-
power laser radiation schemes. Nevertheless, it has drawbacks such as the produced …

Singular optics is a branch of modern optics, and it usually refers to various singularities
including phase, polarization, and energy flux singularities. Lots of excellent researches in …

In view of wide applications of vector beams and powerful light manipulation ability of
metasurfaces, this paper studies the generation of two kinds of vector beams with different …

Highly customized and miniaturized structured light is expected in many application fields. A
kind of structured vortex generators is proposed based on a metasurface consisting of …

We provide a simple analysis based on ray optics and Dirac notation for 1D (one-
dimensional) and 2D (two-dimensional) non-diffracting modes in the cosine profile, which …

Highly localized plasmonic vortices carrying orbital angular momentum are of importance for
many applications. Yet, it is a challenge to generating plasmonic vortex with a high …

We provide a simple analysis based on ray optics and Dirac notation for one and two-
dimensional Cosine beams. We then went on to understand the properties of the Bessel …

The diffraction-free beams with curved trajectories and shaped wavefronts have wide
application prospects in many fields. This paper proposes the generation of diffraction-free …

The phase delays introduced by anisotropic nanounits include propagation phase delay,
resonant phase delay and geometric phase delay. Various phase devices can be formed …

In view of the powerful light field manipulation ability of metasurface and the wide
applications of Bessel beams, parallel Bessel beams are generated based on a simple …