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Diffraction of Electromagnetic Waves

Ulrich Brosa

Brosa GmbH, Am Br¨ucker Tor 4, 35287 Am¨oneburg, Germany and Philipps-Universit¨at, Renthof 6, 35032 Marburg, Germany Reprint requests to U. B.; E-mail: brosa-gmbh@t-online.de

Z. Naturforsch.65a,1 – 24 (2010); received September 16, 2009 / revised November 17, 2009 The general method to obtain solutions of the Maxwellian equations from scalar representatives is developed and applied to the diffraction of electromagnetic waves. Kirchhoff’s integral is modified to provide explicit expressions for these representatives. The respective integrals are then evaluated using the method of stationary phase in two dimensions. Hitherto unknown formulae for the po- larization appear as well as for imaging by diffraction. Ready-to-use formulae describing Fresnel diffraction behind a round stop are presented.

Key words:Electromagnetism; Optics; Diffraction; Polarization.

PACS numbers:41.; 42.; 42.25.Fx; 42.25.Ja

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