Document Detail


Terahertz reflectarray as a polarizing beam splitter.
MedLine Citation:
PMID:  24977867     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
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.
Authors:
Tiaoming Niu; Withawat Withayachumnankul; Aditi Upadhyay; Philipp Gutruf; Derek Abbott; Madhu Bhaskaran; Sharath Sriram; Christophe Fumeaux
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Optics express     Volume:  22     ISSN:  1094-4087     ISO Abbreviation:  Opt Express     Publication Date:  2014 Jun 
Date Detail:
Created Date:  2014-07-01     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101137103     Medline TA:  Opt Express     Country:  United States    
Other Details:
Languages:  eng     Pagination:  16148-60     Citation Subset:  IM    
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