Terahertz Transparent Electrode Using Tripod Metal Aperture Array

In this paper, a high transmission terahertz (THz), polarization insensitive electrode was designed and fabricated to modulate a liquid crystal electro-optic device in the THz regime. The designed electrode consists of a subwavelength periodic tripod aperture array structure patterned in a gold film...

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Bibliographic Details
Published inIEEE transactions on terahertz science and technology Vol. 7; no. 1; pp. 80 - 85
Main Authors Tareki, Abubaker M., Lindquist, Robert G., Wonkyu Kim, Heimbeck, Martin S., Junpeng Guo
Format Journal Article
LanguageEnglish
Published Piscataway IEEE 01.01.2017
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Apertures
Arrays
Conductive films
Electrode polarization
Electrodes
Gold
Indium tin oxide
Liquid crystals
Periodic structures
Resonant frequency
submillimeter wave technology
Substrates
terahertz (THz)
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Summary:In this paper, a high transmission terahertz (THz), polarization insensitive electrode was designed and fabricated to modulate a liquid crystal electro-optic device in the THz regime. The designed electrode consists of a subwavelength periodic tripod aperture array structure patterned in a gold film deposited on a transparent dielectric substrate. The maximum feature size of the structure is maintained below a fraction of the thickness of the electro-optic device to allow a fringing field to uniformly excite the entire electrode area. The transmission reaches as high as 93% in measurements.
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ISSN:2156-342X
2156-3446
DOI:10.1109/TTHZ.2016.2625044