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arXiv · 1609.03869

Twisted Radiation by Electrons in Spiral Motion

M. Katoh·M. Fujimoto·N. S. Mirian·T. Konomi·Y. Taira·T. Kaneyasu·M. Hosaka·N. Yamamoto·A. Mochihashi·Y. Takashima·K. Kuroda·A. Miyamoto·K. Miyamoto·S. Sasaki
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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.

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M. Katoh, M. Fujimoto, N. S. Mirian, T. Konomi, Y. Taira, T. Kaneyasu, M. Hosaka, N. Yamamoto, A. Mochihashi, Y. Takashima, K. Kuroda, A. Miyamoto, K. Miyamoto, S. Sasaki. 2016-09-12. Twisted Radiation by Electrons in Spiral Motion. https://doi.org/10.1038/s41598-017-06442-2

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