As an indispensable complement to an integer vortex beam, the fractional vortex beam has
unique physical properties such as radially notched intensity distribution, complex phase …

The rapid development of lasers since their launch has given a new lease to traditional
optical technology and immensely boosted the development of natural science. Benefiting …

We study theoretically and experimentally the spatial intensity distribution of the zero-order
Bessel beam formed by the axicon which possess a rounded tip. Such a tip generates a …

We experimentally demonstrate optical rotation and manipulation of microscopic particles by
use of optical vortex beams with fractional topological charges, namely fractional optical …

Zero-order and higher-order Bessel beams are well-known nondiffracting beams. Namely,
they propagate with invariant profile (intensity) and carry a fixed orbital angular momentum …

We discuss a simple method to generate a configurable annular vortex beam (AVB) with the
maximum possible peak intensity, employing a phase hologram whose transmittance is the …

An optical vortex carrying orbital angular momentum (OAM) with a fractional topological
charge (TC) is a good complement to a traditional integer optical vortex and has many …

We present that two distinct optical properties of light, the spin angular momentum (SAM)
and the orbital angular momentum (OAM), can be coupled in the plasmonic vortex. If a …

Perfect vortex beams can only propagate stably with integer topological charges. Thus,
creating perfect fractional vortex beams capable of stable propagation in free space, as …

One of the key trends in laser material processing is the usage of structured laser beams.
Collimated and focused Gaussian beams are the most common tools; however, more exotic …