Scattering of polarized non-diffracting Lommel beams by nonspherical homogeneous particles

摘要: Abstract We report a detailed study of the scattering from nonspherical homogeneous particles illuminated by non-diffracting Lommel beams with different states polarization. Based on scalar expression beam, introducing vector potential and using Lorentz gauge, full vector-wave derivation for electric magnetic field components linear, circular, radial, azimuthal polarizations is provided. The surface integral equations method (SIEM) applied to characterize problems involving dielectric particles. As an example, effects various parameters characterizing feature differential cross section (DSCS) spheroid are examined. results show that DSCS strongly affected polarization, asymmetric constant, half-cone angle, order incident which indicates appropriate selection these can enhance or suppress DSCSs beam polarization cylinder, cone, hexagonal prism also presented. These will be useful reveal mechanism provide references optical diagnosis, measurement manipulation