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On energy conditions for electromagnetic diffraction by apertures.

by Gorenflo, N.; Kunik, M..

Series: 2011-21, Preprints

78A25 Electromagnetic theory, general
78A45 Diffraction, scattering
46E35 Sobolev spaces and other spaces of “smooth” functions, embedding theorems, trace theorems
45E10 Integral equations of the convolution type (Abel, Picard, Toeplitz and ~Wiener-Hopf type)
35S05 Pseudodifferential operators

The diffraction of light is considered for a plane screen with an open bounded aperture. The corresponding solution behind the screen is given explicitly in terms of the Fourier transforms of the tangential components of the electric boundary field on the screen. All components of the electric as well as the magnetic field vector are considered. We introduce solutions with global finite energy behind the screen and describe them in terms of two boundary potential functions. This new approach leads to a decoupling of the vectorial boundary equations on the screen in the case of global finite energy. For the physically admissible solutions, i.e. the solutions with local finite energy, we derive a characterisation in terms of the electric boundary fields.

Electromagnetic diffraction by apertures, Fourier analysis, Sobolev spaces, energy conditions, vectorial pseudodifferential operators