Inhomogeneous Electromagnetic Waves Research Articles

Interaction of a relativistic beam with an inhomogeneous electromagnetic wave

A theoretical analysis is made of the motion of a relativistic particle beam across an electromagnetic H01, wave propagating in a rectangular waveguide and across a TEM wave propagating in a symmetric open two-conductor line. Modulation of the transverse coordinates and the particle velocities is investigated. A study is made of the interaction between the beam and an inhomogeneous wave. It is shown that when the beam propagates through an inhomogeneous wave, the particle energy may be converted into the radiation energy. A comparison is made with the results of numerical calculations of the particle dynamics in a wave field.

Inhomogeneous electromagnetic plane waves in crystals

The propagation of inhomogeneous, time harmonic, elliptically polarised, electromagnetic plane waves in non-absorbing, magnetically isotropic, but electrically anisotropic, crystals is considered. The electric displacement and the magnetic induction are assumed to have the forms D exp lω(S · x−t) and B exp lω(S · x−t), respectively, at the place x and time t, where D, S, B are Gibbs bivectors (complex vectors) and ω is real. The implications of Maxwell's equations for the various field quantities are interpreted simply and directly through the use of bivectors and their associated ellipses.

Infrared surface-wave interferometry on W(100)

An IR grating on a clean W(100) surface is shown to generate both homogeneous and inhomogeneous surface electromagnetic waves. An observed interference between these two components, which can be described in terms of a two-beam interferometer with variable arm amplitude and fixed optical path, is used to measure the plasma frequency accurately in the IR.

Beam splitting by a plane-parallel absorptive slab

A study of the transmission of inhomogeneous electromagnetic waves through an interface between a transparent and an absorbing medium leads to the prediction of a novel effect. A beam of unpolarized light passing through a dissipative plane-parallel slab splits into two parallel beams. The electric field in one beam is perpendicular to the plane of incidence, whereas in the other beam it is parallel to this plane.

Introducing energetic reflection and transmission coefficients of inhomogeneous electromagnetic waves

Introducing energetic reflection and transmission coefficients of inhomogeneous electromagnetic waves

Reflection of inhomogeneous electromagnetic waves on the interface between an absorbing and a transparent medium

Reflection of inhomogeneous electromagnetic waves on the interface between an absorbing and a transparent medium

The laws of reflection and refraction of incompressible magnetohydrodynamic waves at a fluid-solid interface

The laws of reflection and refraction of incompressible magnetohydrodynamic (MHD) waves at a fluid-solid interface are derived by matching inhomogeneous electromagnetic plane wave solutions in a finitely conducting solid with homogeneous MHD plane wave solutions in a semi-infinite, perfectly conducting, inviscid fluid. In the undisturbed state both media contain a constant and uniform magnetic field H 0 of arbitrary orientation with respect to the interface. The solid solution represents a refracted wave which attenuates due to ohmic dissipation as it penetrates the solid, while the fluid solution consists of unattenuated incident and reflected waves plus a disturbance travelling parallel to the interface whose amplitude decreases exponentially (without dissipation) with distance from the interface. Modification of the Ferraro-Roberts law of reflection is required to insure that incident and reflected waves propagate in opposite directions along H 0. Since the law is independent of the fluid and solid parameters, it is also valid in the fluid-fluid and fluid-free-space cases. Owing to the anisotropy imparted to the fluid by H 0, the law of refraction is antisymmetric about normal incidence and, as a result, most waves from an isotropic source are refracted into the quadrant of the plane of incidence containing a component of H 0.