Positive-, negative-, and orthogonal-phase-velocity propagation of electromagnetic plane waves in a simply moving medium: Reformulation and reappraisal

Tom G. Mackay, Akhlesh Lakhtakia

Research output: Contribution to journalArticlepeer-review

Abstract

Reformulating the issue of planewave propagation in a simply moving, dielectric-magnetic medium that is isotropic in the co-moving: reference frame, using the Lorentz transformations of electric and magnetic fields and not the Minkowski constitutive relations-we reaffirm that plane waves which have positive phase velocity in the co-moving frame of reference can have negative phase velocity in certain non-co-moving frames of reference. Furthermore, this phenomenon occurs whether the medium is dissipative or not. For a fixed propagation direction, orthogonal phase velocity arises only at a unique velocity of the non-co-moving frame. (C) 2007 Elsevier GmbH. All rights reserved.

Original languageEnglish
Pages (from-to)45-48
Number of pages4
JournalOptik
Volume120
Issue number1
DOIs
Publication statusPublished - 2009

Keywords

  • Lorentz transformations
  • Minkowski constitutive relations
  • Phase velocity
  • Poynting vector

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