Negative– and positive–phase–velocity propagation in an isotropic chiral medium moving at constant velocity
نویسندگان
چکیده
Analysis of electromagnetic planewave propagation in a medium which is a spatiotemporally homogeneous, temporally nonlocal, isotropic, chiral medium in a co–moving frame of reference shows that the medium is both spatially and temporally nonlocal with respect to all non–co–moving inertial frames of reference. Using the Lorentz transformations of electric and magnetic fields, we show 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. Similarly, plane waves which have negative phase velocity in the co–moving frame can have positive phase velocity in certain non–co–moving frames.
منابع مشابه
Simultaneous Negative– and Positive–phase–velocity Propagation in an Isotropic Chiral Medium
The phase velocity of plane waves propagating in an isotropic chiral medium can be simultaneously positive for left–circularly polarized light and negative for right–circularly polarized light (or vice versa). The constitutive parameter regimes supporting this phenomenon are established for nondissipative and dissipative mediums. The boundary between positive and negative phase velocity is char...
متن کاملOrthogonal–Phase–Velocity Propagation of Electromagnetic Plane Waves
In an isotropic, homogeneous, nondissipative, dielectric–magnetic medium that is simply moving with respect to an inertial reference frame, planewave solutions of the Maxwell curl postulates can be such that the phase velocity and the time–averaged Poynting vector are mutually orthogonal. Orthogonal–phase–velocity propagation thus adds to the conventional positive–phase–velocity propagation and...
متن کاملVelocity Modeling in a Vertical Transversely Isotropic Medium Using Zelt Method
In the present paper, the Zelt algorithm has been extended for ray tracing through an anisotropic model. In anisotropic media, the direction of the propagated energy generally differs from that of the plane-wave propagation. This makes velocity values to be varied in different directions. Therefore, velocity modeling in such media is completely different from that in an isotropic media. The vel...
متن کاملPlane waves with negative phase velocity in Faraday chiral mediums.
The propagation of plane waves in a Faraday chiral medium is investigated. Conditions for the phase velocity to be directed opposite to the direction of power flow are derived for propagation in an arbitrary direction; simplified conditions which apply to propagation parallel to the distinguished axis are also established. These negative phase-velocity conditions are explored numerically using ...
متن کاملFractional Duality in Homogeneous Bi-isotropic Medium
The fractional dual solutions of Maxwell equations in bi-isotropic medium are determined using the field decomposition approach. Both negative phase velocity and positive phase velocity propagation have been considered. The results are compared with the corresponding available results for isotropic and chiral medium. Time average power associated with fractional dual fields and corresponding so...
متن کامل