Orbital angular momentum due to modes interference
Irving Rondon, Francisco Soto-Eguibar
TL;DR
This paper derives generalized formulas for calculating the orbital angular momentum in invariant beams, analyzing how mode superpositions influence angular momentum flux, with specific illustrations using Bessel beams.
Contribution
It introduces new generalized expressions for orbital angular momentum in invariant beams, considering superpositions of TE, TM, and TE/TM modes, including non-paraxial cases.
Findings
Superposition of modes yields well-defined orbital angular momentum.
Mode superposition influences angular momentum flux density.
Results demonstrated specifically for Bessel beams.
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.
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Taxonomy
TopicsOrbital Angular Momentum in Optics · Quantum and Classical Electrodynamics · Metamaterials and Metasurfaces Applications