CST – Computer Simulation Technology

Regular and anomalous Extraordinary Optical Transmission at the THz-gap

Title:
Regular and anomalous Extraordinary Optical Transmission at the THz-gap
Author(s):
S.A. Kuznetsov, M. Navarro-Cía, V.V. Kubarev, A.V. Gelfand, M. Beruete, I. Campillo, M. Sorolla
Source:
OPTICS EXPRESS
Vol./Issue/Date:
Volume: 17, Issue: 14, 6 July 2009
Year:
2009
Page(s):
11730-11738
Abstract:
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.
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