Orbital angular momentum due to modes interference

Abstract

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.

An analytical approximation to measure the extinction cross-section using: Localized Waves

“…It is worth mentioning that using the LW representation is straightforward to generate different vector beams. It allows to study of fundamental properties for electromagnetic beams [41], the transversal component of the Poynting vector [42], and the orbital angular momentum for nonparaxial beams [43] among others problems. The following section shows how an extended optical theorem using these results.…”