Propagation and Self-Action of Bessel Light Beams in Dye Solutions

Abstract

This paper presents theoretical and experimental studies into the transformation patterns of the spatial structure of Bessel light beams propagating in dye solutions. Based on a theoretical analysis and numerical solution of the Lagrangian-form motion equations for continuous media and heat conduction equation, and also with the use of Lorentz-Lorenz formula, the spatial profiles for the formed circular diffraction structures of the refractive index have been computed, their excitation and relaxation kinetics has been considered. Self-diffraction of a Bessel light beam from the diffraction structures formed in dye solutions has been studied experimentally; the far-field Bessel light beam structures have been analyzed; the conditions for observation of the self-action effects due to the dye solution absorption saturation have been established.