Internal and External Electric Fields for an Anisotropic Dielectric Particle in Electromagnetic Beams

The analytical expressions of the external and internal electric fields for an anisotropic particle in electromagnetic (EM) beams are presented by transforming anisotropic dielectric particle into the isotropic one based on the scales transformation of EM theory. The theoretical expressions are in good agreement with that in literatures. Taking the case of elliptical Gaussian beam, simulations of influence induced by dielectric tensor and the waists, etc., on the fields are demonstrated. The numerical simulations show that the electric field increases with the augment of beam and the higher order electric field is much smaller than the lower field.