DocumentCode :
2903137
Title :
3D interaction of Gaussian beams with dichroic surfaces for the modeling of quasi-optical systems
Author :
Elis, Kevin ; Chabory, Alexandre ; Sokoloff, J.
Author_Institution :
Service Antennes, CNES, Toulouse, France
fYear :
2012
fDate :
25-28 June 2012
Firstpage :
1
Lastpage :
5
Abstract :
In quasi-optical systems, dichroic surfaces are used to split, filter, or mix signals. Such surfaces cannot be modeled by existing Gaussian-beam methods. In this article we propose a technique to model the interaction of a Gaussian beam (GB) with a dichroic surface based on a matching in the spectral domain. For a GB illumination of the surface, the reflected and transmitted fields are approximated by one reflected and one transmitted Gaussian beams. Their characteristics are determined by means of the spectral matching through a second-order approximation of the dichroic surface response when excited by plane-waves. Numerical experiments and comparisons with reference solutions show the efficiency of the method in terms of accuracy and computation time.
Keywords :
Gaussian processes; approximation theory; dichroism; filtering theory; radiometry; spectral analysis; 3D Gaussian beam interaction; GB surface illumination; dichroic surface response; plane wave excitation; quasioptical system modeling; reflected Gaussian beams; reflected fields; second-order approximation; signal filtering; signal mixing; signal splitting; spectral domain; spectral matching; transmitted Gaussian beams; transmitted fields; Approximation methods; Computational modeling; Dielectrics; Optical surface waves; Response surface methodology; Spectral analysis; Surface waves; Gaussian beam; dichroic surface; quasi-optics; spectrum matching;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Antenna Technology and Applied Electromagnetics (ANTEM), 2012 15th International Symposium on
Conference_Location :
Toulouse
Print_ISBN :
978-1-4673-0290-6
Type :
conf
DOI :
10.1109/ANTEM.2012.6262371
Filename :
6262371
Link To Document :
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