S
Siavoush M. Mohammadi
Researcher at Swedish Institute of Space Physics
Publications - 6
Citations - 841
Siavoush M. Mohammadi is an academic researcher from Swedish Institute of Space Physics. The author has contributed to research in topics: Angular momentum & Orbital angular momentum of light. The author has an hindex of 6, co-authored 6 publications receiving 681 citations. Previous affiliations of Siavoush M. Mohammadi include Interamerican University of Puerto Rico.
Papers
More filters
Journal ArticleDOI
Orbital Angular Momentum in Radio—A System Study
Siavoush M. Mohammadi,L. K. S. Daldorff,Jan Bergman,Roger Karlsson,Bo Thidé,K. Forozesh,Tobia Carozzi,B. Isham +7 more
TL;DR: In this paper, the authors used vector field-sensing electric and magnetic triaxial antennas to estimate the orbital angular momentum (OAM) of radio beams, assuming ideal (noiseless) conditions and that the beam axis is known.
Journal ArticleDOI
Orbital angular momentum in radio: Measurement methods
Siavoush M. Mohammadi,Siavoush M. Mohammadi,L. K. S. Daldorff,Kamyar Forozesh,Bo Thidé,Jan Bergman,B. Isham,Roger Karlsson,Tobia Carozzi +8 more
TL;DR: In this paper, a measurement and approximation methodologies for studying orbital angular momentum (OAM) modes in radio beams, i.e., electromagnetic beam modes having helical phase fronts, are presented.
Posted Content
Conservation Laws in Generalized Riemann-Silberstein Electrodynamics
Jan Bergman,Siavoush M. Mohammadi,L. K. S. Daldorff,Bo Thidé,Tobia Carozzi,Roger Karlsson,Marcus Eriksson +6 more
TL;DR: In this article, the authors derived the usual and ten additional Poincar invariants, the latter being related to the electromagnetic spin, i.e., the intrinsic rotation, or state of polarization, of the electromagnetic fields.
Posted Content
Photon orbital angular momentum in a plasma vortex
José Tito Mendonça,Bo Thidé,Jan Bergman,Siavoush M. Mohammadi,Bengt Eliasson,W. A. Baan,Holger Then +6 more
TL;DR: In this article, the exchange of angular momentum between a photon beam and a plasma vortex was studied theoretically, and the possible excitation of photon angular momentum states in a plasma was demonstrated.