On Generation of Photons Carrying Orbital Angular Momentum in the Helical Undulator

Abstract

We analyze properties of electromagnetic radiation in helical undulators with a particular emphasis on orbital angular momentum of the radiated photons. We demonstrate that all harmonics higher than the first one radiated in a helical undulator carry an angular momentum. We discuss some possible applications of this phenomenon and the ways of effective generation of these photons in a helical undulator. We call for review of results of experiments performed where the higher harmonics radiated in a helical undulator might be involved.

References in corpus (2)

• Generation of High-Energy Photons with Large Orbital Angular Momentum by Compton Backscattering
• New Experimental Limit on Photon Hidden-Sector Paraphoton Mixing

Cited by in corpus (5)

• Probability of radiation of twisted photons by classical currents
• Probability of radiation of twisted photons by axially symmetric bunches of particles
• Probability of radiation of twisted photons in an inhomogeneous isotropic dispersive medium
• Generation of twisted photons by undulators filled with dispersive medium
• Orbital angular momentum beam generation using a free-electron laser oscillator