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Scattering of a gaussian beam by an infinite cylinder with arbitrary location and arbitrary orientation: numerical
1Laboratoire d'Energétique des Systèmes et Procédés, Unité Mixte de Recherche 6614, Complexe de Recherche Interprofessionnel en Aerothermochimie, Institut National des Sciences Appliqués de Rouen, Place Emile Blondel, BP 8, 76130 Mont-Saint-Aignan cedex, France.
Abstract:
We present numerical results concerning the properties of the electromagnetic field scattered by an infinite circular cylinder illuminated by a circular Gaussian beam. The cylinder is arbitrarily located and arbitrarily oriented with respect to the illuminating Gaussian beam. Numerical evaluations are provided within the framework of a rigorous electromagnetic theory, the generalized Lorenz-Mie theory, for infinite cylinders. This theory provides new insights that could not be obtained from older formulations, i.e., geometrical optics and plane-wave scattering. In particular, some emphasis is laid on the waveguiding effect and on the rainbow phenomenon whose fine structure is hardly predictable by use of geometrical optics.
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