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 …

Polarization singularities are superpositions of orbital angular momentum (OAM) states in
orthogonal circular polarization basis. The intrinsic OAM of light beams arises due to the …

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

Since the second half of the 20th century, ideas to develop methods for the formation of
optical vortices (OVs) or OV beams–regions of circular motion of energy flow in an …

The unique properties of optical vortex beams, in particular their spiral wavefront, have
resulted in the emergence of a wide range of unique applications for this type of laser output …

Fractional vortex beams (FVBs) with non-integer topological charges attract much attention
due to unique features of propagations, but different viewpoints still exist on the change of …

Polarization singularities are superpositions of orbital angular momentum (OAM) states in
orthogonal circular polarization basis. The intrinsic OAM of light beams arises due to the …

Single-cell nanosurgery and the ability to manipulate nanometer-sized subcellular structures
with optical tweezers has widespread applications in biology but so far has been limited by …

A spiral phase plate with an azimuthal structure exp [i?](0??< 2π) has been used as a filter
in a 4f system to achieve edge enhancement. Generally such edge-enhanced effect is …

The study and application of optical vortices have gained significant prominence over the
last two decades. An interesting challenge remains the determination of the azimuthal index …