Twisted Radiation by Electrons in Spiral Motion
Optics
2018-11-16 v2 Accelerator Physics
Abstract
We theoretically show that a single free electron in circular/spiral motion radiates an electromagnetic wave possessing helical phase structure and carrying orbital angular momentum. We experimentally demonstrate it by double-slit diffraction on radiation from relativistic electrons in spiral motion. We show that twisted photons should be created naturally by cyclotron/synchrotron radiations or Compton scatterings in various situations in cosmic space. We propose promising laboratory vortex photon sources in various wavelengths ranging from radio wave to gamma-rays.
Cite
@article{arxiv.1609.03869,
title = {Twisted Radiation by Electrons in Spiral Motion},
author = {M. Katoh and M. Fujimoto and N. S. Mirian and T. Konomi and Y. Taira and T. Kaneyasu and M. Hosaka and N. Yamamoto and A. Mochihashi and Y. Takashima and K. Kuroda and A. Miyamoto and K. Miyamoto and S. Sasaki},
journal= {arXiv preprint arXiv:1609.03869},
year = {2018}
}