Regular and anomalous extraordinary optical transmission at the THz-gap

In this paper Anomalous Extraordinary Transmission (ET) is reported for s-polarization of low loss doubly periodic subwavelength hole arrays patterned on polypropylene (PP) substrates by conventional contact photolithography at the so-called THz-gap (1-10 THz). The unexpected enhanced transmittance...

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Bibliographic Details
Published in:Optics express 2009-07, Vol.17 (14), p.11730-11738
Main Authors: Kuznetsov, S A, Navarro-Cía, M, Kubarev, V V, Gelfand, A V, Beruete, M, Campillo, I, Sorolla, M
Format: Article
Language:English
Subjects:
Equipment Design
Fourier Analysis
Infrared Rays
Metals - chemistry
Microwaves
Models, Theoretical
Polypropylenes - chemistry
Radiation
Refractometry
Scattering, Radiation
Signal Processing, Computer-Assisted
Surface Plasmon Resonance - instrumentation
Surface Plasmon Resonance - methods
Surface Properties
Terahertz Radiation
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Summary:In this paper Anomalous Extraordinary Transmission (ET) is reported for s-polarization of low loss doubly periodic subwavelength hole arrays patterned on polypropylene (PP) substrates by conventional contact photolithography at the so-called THz-gap (1-10 THz). The unexpected enhanced transmittance for s-polarization (i.e. without spoof plasmons) was previously numerically demonstrated in subwavelength slits arrays. However, subsequently no experimental work has been devoted to this unexpected Extraordinary Transmission neither in subwavelength slits nor in subwavelength holes. Here, numerical study and experimental results of the Anomalous ET and the symmetric and antisymmetric transmittance modes associated with the already well-known p-polarization ET are shown alongside a systematically analysis of the frequency peaks as a function of hole size for both incident polarizations.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.17.011730