Coherent detection of orbital angular momentum in radio
Classical Physics
2015-12-24 v1
Abstract
The angular momentum propagated by a beam of radiation has two contributions: spin angular momentum (SAM) and orbital angular momentum (OAM). SAM corresponds to wave polarisation, while OAM-carrying beams are characterized by a phase which is a function of azimuth. We demonstrate experimentally that radio beams propagating OAM can be generated and coherently detected using ordinary electric dipole antennas. The results presented here could pave the way for novel radio OAM applications in technology and science, including radio communication, passive remote sensing, and new types of active (continuous or pulsed transmission) electromagnetic measurements.
Keywords
Cite
@article{arxiv.1512.07623,
title = {Coherent detection of orbital angular momentum in radio},
author = {L. K. S. Daldorff and S. M. Mohammadi and J. E. S. Bergman and B. Isham and M. K. T. Al-Nuaimi and K. Forozesh and T. D. Carozzi},
journal= {arXiv preprint arXiv:1512.07623},
year = {2015}
}
Comments
13 pages, 4 figures