Planar optical elements that can manipulate the multidimensional physical parameters of
light efficiently and compactly are highly sought after in modern optics and nanophotonics. In …

A comparative review is given of some well-known and some recent results obtained in
studies of two-and three-dimensional (2D and 3D) solitons, with emphasis on states carrying …

The Möbius strip, a fascinating loop structure with one-sided topology, provides a rich
playground for manipulating the non-trivial topological behaviour of spinning particles, such …

Vector-vortex (VV) beams are of significant interest for various applications. There have
been substantial efforts toward develo** a fast and efficient method for the …

Vector vortex beams (VVBs) have attracted significant attention in both classical and
quantum optics. Liquid crystal (LC), beyond its applications in information display, has …

Topological defects in nematic liquid crystals are ubiquitous. The defects are important in
understanding the fundamental properties of the systems, as well as in practical …

In this paper, we investigate the generation and controlling of the optical vortex beam using
a dye-doped liquid crystal (DDLC) cell. The spatial distribution of the quasi-sinusoidal …

A new concept of thin, flat, transparent variable lenses with unprecedented performance in
terms of active diameter and focal distance range is presented. The diffractive lens consists …

Hierarchical architectures are of vital importance in materials science and nanotechnology.
Among various building blocks, liquid crystals (LCs) have attracted particular attention due …

Stable self-trapped vortex annuli (VA) with large values of topological charge S (giant VA)
not only are a subject of fundamental interest, but are also sought for various applications …