Formation of Inverse Energy Flux in the Case of Diffraction of Linearly Polarized Radiation by Conventional and Generalized Spiral Phase Plates

Recently, there has been increased interest in the shaping of light fields with an inverse energy flux to guide optically trapped nano- and microparticles towards a radiation source. To generate flux, non-uniformly polarized laser beams, especially higher-order cylindrical vector are widely used. Here, we demonstrate use conventional so-called generalized spiral phase plates for formation when they illuminated linearly radiation. We present analytical numerical study longitudinal transverse components Poynting vector. The conditions maximizing negative value real part component obtained.