THz Transparent Metamaterials for Enhanced Spectroscopic and Imaging Measurements

We present a frequency-selective surfaces (FSS) transparent window exhibiting low losses for broadband spectroscopic and imaging measurements in terahertz (THz) frequencies. The intent is to replace existing samples holders (e.g., Z-cut crystal quartz) with transparent metamaterial windows and incre...

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Bibliographic Details
Published in:IEEE transactions on terahertz science and technology 2015-01, Vol.5 (1), p.117-123
Main Authors: Sanphuang, Varittha, Woon-Gi Yeo, Volakis, John L., Nahar, Niru K.
Format: Article
Language:English
Subjects:
Bandwidth
Frequency selective surfaces
Imaging
Loss measurement
Metamaterials
periodic structures
Refractive index
Substrates
terahertz (THz) spectroscopy
THz imaging
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Description
Summary:We present a frequency-selective surfaces (FSS) transparent window exhibiting low losses for broadband spectroscopic and imaging measurements in terahertz (THz) frequencies. The intent is to replace existing samples holders (e.g., Z-cut crystal quartz) with transparent metamaterial windows and increase measurement sensitivity. To enable multiband and broadband responses, two designs of single-layer FSS with superstrate are demonstrated: circular slot and double square loop, and thus suppress losses in a given range of THz band.
ISSN:2156-342X
2156-3446
DOI:10.1109/TTHZ.2014.2362659