Over the past 36 years much research has been carried out on Bessel beams (BBs) owing to
their peculiar properties, viz non-diffraction behavior, self-healing nature, possession of well …

The Laguerre-Gaussian (LG) modes constitute a complete basis set for representing the
transverse structure of a paraxial photon field in free space. Earlier workers have shown how …

As a means of increasing the channel capacity in free-space optical communication
systems, two types of orbital angular momentum carrying beams, Bessel–Gauss and …

The Laguerre-Gauss modes are a class of fundamental and well-studied optical fields.
These stable shape-invariant photons, exhibiting circular-cylindrical symmetry, are familiar …

Here we outline a description of paraxial light propagation from a modal perspective. By
decomposing the initial transverse field into a spatial basis whose elements have known …

A theoretical and experimental study of the propagation of vortex laser beams in a random
aerosol medium is presented. The theoretical study is based on the extended Huygens …

We experimentally investigate the potential of using 'self-healing'Bessel-Gaussian beams
carrying orbital-angular-momentum to overcome limitations in obstructed free-space optical …

Using spatial modes for quantum key distribution (QKD) has become highly topical due to
their infinite dimensionality, promising high information capacity per photon. However …

It is understood from the conical wave picture that Bessel beams may self-heal after certain
opaque obstructions, but the extrapolation to transparent phase screens is not self-evident …

One of the most captivating properties of diffraction-free optical fields is their ability to
reconstruct upon propagation in the presence of an obstacle, both classically and in the …