Tight focusing of phase modulated radially polarized hollow Gaussian beam using complex phase filter

Focal Hole Shifting of Azimuthally Polarized Sinh Gaussian Beam using Cosine Phase Filter

“…The more general solution is Hermite-Sinusoidal-Gaussian beams, which was introduced by Casperson and coworkers [12,13]. Hyperbolic-cosine-Gaussian beams are regarded as the special case of Hermite-sinusoidal-Gaussian beams, and are of practical interest because their profiles can be altered by choosing suitable beam parameters in cosh parts [14].Among the variety of types of gaussian beams, e.g.,Laguerre-Gaussian (LG) beam [15], the high order hollow sinh-Gaussian beam [16], Multigaussian beam [17], Hollow gaussian beam are discussed in depth [18].On the other hand, research on optical vortices has grown rapidly, because optical vortices have some interesting properties and applications [19][20]. Evolution of the optical vortex was found in stochastic vortex fields [21].…”