DocumentCode :
2945913
Title :
Equivalent circuit model to explain extraordinary transmission
Author :
Medina, Francisco ; Mesa, Francisco ; Marques, Ricardo
Author_Institution :
Dept. Electronics and Electromagnetism, Physics Faculty, Univ. Seville, 41012, Spain
fYear :
2008
fDate :
15-20 June 2008
Firstpage :
213
Lastpage :
216
Abstract :
This work proposes a circuit model based explanation for the extraordinary transmission (ET) of light phenomenon studied in recent scientific literature [1], [2]. ET mainly stands for unexpected transmission of light through periodic arrays of subwavelength holes in a metal screen. The study of this phenomenon has attracted the attention of many scientists working in the fields of optics and condensed matter physics, giving place to some controversial explanations. The existence of surface plasmons supported by the metal/air interface at optical frequencies has been considered the underlying reason behind ET. Our contribution tries to offer a relatively simple explanation of ET based on conventional waveguide/transmission-line theory. It will be shown how this simplified microwave-engineering standpoint offers satisfactory explanation for most ET findings. Indeed, ET should be expected not only at optical frequencies but also at lower frequencies, when surface plasmons are not possible.
Keywords :
equivalent circuits; light propagation; surface plasmons; condensed matter physics; equivalent circuit model; extraordinary transmission; light phenomenon; metal screen; periodic arrays; subwavelength holes; surface plasmons; Equivalent circuits; Frequency; Optical arrays; Optical surface waves; Optical waveguide theory; Optical waveguides; Physics; Plasmons; Surface waves; Transmission lines; Extraordinary transmission; circuit modeling; periodic structures; surface plasmons;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Microwave Symposium Digest, 2008 IEEE MTT-S International
Conference_Location :
Atlanta, GA
ISSN :
0149-645X
Print_ISBN :
978-1-4244-1780-3
Electronic_ISBN :
0149-645X
Type :
conf
DOI :
10.1109/MWSYM.2008.4633141
Filename :
4633141
Link To Document :
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