Astigmatic transformation of the Bessel beam and the Gauss–Laguerre beam

In studies of the anisotropy may be useful the Bessel beams, which have a high sensitivity to the asymmetry of the wave front. Beams Gauss-Laguerre are capable of to maintain their structure in free space. Gauss-Laguerre modes have found their application in optical manipulation of micro-objects, quantum optics, optical communications. In this paper presents a numerical calculation and analysis of the passage of a Bessel beam of zero order and a Gauss-lager beam through polarization devices. Transverse intensity patterns are obtained for beam propagation after passing through wave plates with different types of polarization. This work provides detailed information on polarization transformations of light beams, which can be useful in acute focusing, with optical manipulation of micro-objects. The study of astigmatic transformations of Bessel beams can be useful in capturing and controlling microparticles. (paper)