Tuesday, 17 March 2015

THz Transparent Metamaterials for Enhanced Spectroscopic and Imaging Measurements

Sanphuang, V. ;  Woon-Gi Yeo ; Volakis, J.L. ; Nahar, N.K.


Abstract


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.