Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/84678
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Type: Journal article
Title: Terahertz reflectarray as a polarizing beam splitter
Author: Niu, T.
Withayachumnankul, W.
Upadhyay, A.
Gutruf, P.
Abbott, D.
Bhaskaran, M.
Sriram, S.
Fumeaux, C.
Citation: Optics Express, 2014; 22(13):16148-16160
Publisher: Optical Society of America
Issue Date: 2014
ISSN: 1094-4087
1094-4087
Statement of
Responsibility: 
Tiaoming Niu, Withawat Withayachumnankul, Aditi Upadhyay, Philipp Gutruf, Derek Abbott, Madhu Bhaskaran, Sharath Sriram and Christophe Fumeaux
Abstract: A reflectarray is designed and demonstrated experimentally for polarization-dependent beam splitting at 1 THz. This reflective component is composed of two sets of orthogonal strip dipoles arranged into interlaced triangular lattices over a ground plane. By varying the length and width of the dipoles a polarization-dependent localized phase change is achieved on reflection, allowing periodic subarrays with a desired progressive phase distribution. Both the simulated field distributions and the measurement results from a fabricated sample verify the validity of the proposed concept. The designed terahertz reflectarray can efficiently separate the two polarization components of a normally incident wave towards different predesigned directions of ±30°. Furthermore, the measured radiation patterns show excellent polarization purity, with a cross-polarization level below −27 dB. The designed reflectarray could be applied as a polarizing beam splitter for polarization-sensitive terahertz imaging or for emerging terahertz communications.
Rights: © 2014 Optical Society of America
RMID: 0020138976
DOI: 10.1364/OE.22.016148
Grant ID: http://purl.org/au-research/grants/arc/DP1092717
http://purl.org/au-research/grants/arc/DP110100262
http://purl.org/au-research/grants/arc/FT120100351
http://purl.org/au-research/grants/arc/FT100100585
Appears in Collections:Electrical and Electronic Engineering publications

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