Orbital angular momentum due to modes interference

We present generalized expressions to calculate the orbital angular momentum for invariant beams using scalars potentials. The solutions can be separated into transversal electric TE, transversal magnetic TM and transversal electromagnetic TE/TM polarization modes. We show that the superposition of non-paraxial vectorial beams with axial symmetry can provide a well-defined orbital angular momentum and that the modes superposition affects the angular momentum flux density. The results are illustrated and analyzed for Bessel beams.

Dielectric body with arbitrary shaped and positioned cavity in homogeneous transversal electric field

This paper presents an application of Charge Simulation Method for calculation of the electric field strength and the potential in the arbitrary shaped and positioned cavity of the dielectric body. The dielectric body can also have an arbitrary, but known shape. Several examples of the dielectric body with the cavity are presented. The whole system is in the homogeneous transverse electrical field. The results obtained in this way have been compared to the results obtained by the program?s packages: Bela 1.0 and Quickfield 4.2 (Student?s Edition).