Terahertz reflectarray as a polarizing beam splitter

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dc.contributor.authorNiu, T.
dc.contributor.authorWithayachumnankul, W.
dc.contributor.authorUpadhyay, A.
dc.contributor.authorGutruf, P.
dc.contributor.authorAbbott, D.
dc.contributor.authorBhaskaran, M.
dc.contributor.authorSriram, S.
dc.contributor.authorFumeaux, C.
dc.date.issued2014
dc.description.abstractA 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.
dc.description.statementofresponsibilityTiaoming Niu, Withawat Withayachumnankul, Aditi Upadhyay, Philipp Gutruf, Derek Abbott, Madhu Bhaskaran, Sharath Sriram and Christophe Fumeaux
dc.identifier.citationOptics Express, 2014; 22(13):16148-16160
dc.identifier.doi10.1364/OE.22.016148
dc.identifier.issn1094-4087
dc.identifier.issn1094-4087
dc.identifier.orcidWithayachumnankul, W. [0000-0003-1155-567X]
dc.identifier.orcidAbbott, D. [0000-0002-0945-2674]
dc.identifier.orcidFumeaux, C. [0000-0001-6831-7213]
dc.identifier.urihttp://hdl.handle.net/2440/84678
dc.language.isoen
dc.publisherOptical Society of America
dc.relation.granthttp://purl.org/au-research/grants/arc/DP1092717
dc.relation.granthttp://purl.org/au-research/grants/arc/DP110100262
dc.relation.granthttp://purl.org/au-research/grants/arc/FT120100351
dc.relation.granthttp://purl.org/au-research/grants/arc/FT100100585
dc.rights© 2014 Optical Society of America
dc.source.urihttps://doi.org/10.1364/oe.22.016148
dc.titleTerahertz reflectarray as a polarizing beam splitter
dc.typeJournal article
pubs.publication-statusPublished

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