Director, Faculty of Basic Sciences, University of Gujrat, Pakistan.
Online published on 11 January, 2013.
We study theoretically the exchange of angular momentum between a photon beam and a plasma vortex, and demonstrate the possible excitation of high order photon angular momentum (DAM) states in a plasma. This can be relevant to plasma diagnostics, both in laboratory and in space; radio astronomy selfcalibration and interference mitigation; and photon DAM beam generation. Two situations will be considered in detail; a static plasma perturbation with helical structure, and a rotating plasma
intrinsic SAM of photons, frequency shift, plasma vorticity and properties
