Physics – Plasma Physics
Scientific paper
2008-04-20
Physics
Plasma Physics
4 pages, submitted to Phys. Rev. Lett
Scientific paper
We study theoretically the exchange of angular momentum between a photon beam and a plasma vortex, and demonstrate the possible excitation of photon angular momentum states in a plasma. This can be relevant to laboratory and space plasma diagnostics; radio astronomy self-calibration; and generating photon angular momentum beams. A static plasma perturbation with helical structure, and a rotating plasma vortex are studied in detail and a comparison between these two cases, and their relevance to the physical nature of photon OAM, is established.
Baan Willem
Bergman Jan E. S.
Eliasson Baldur
Mendonca Tito J.
Mohammadi Siavoush M.
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