Broadband circular polarizers using plasmonic metasurfaces

Yang Zhao, Andrea Alù

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In nature, circular polarization detection is unique to bio-systems, since human eyes cannot detect polarization information. Various animal species successfully use it for defense, signaling and orientation. It may be of great interest to reproduce these functionalities in artificial photonic devices, being able to distinguish different handedness of circular polarization, and to possibly integrate this operation with other photonic systems. However, currently available artificial circular polarizers are inherently narrow bandwidth, bulky and with poor efficiency. Here, we put forward some exciting ideas to employ individual and stacked plasmonic metasurfaces to generate or to filter circular polarizations. We model a single ultrathin metasurface as a shunt circuit element in terms of its admittance tensor and show that under certain conditions one can exploit the exotic features of plasmonic materials to realize ultrathin circular polarization filters with broad bandwidth of operation.

Original languageEnglish (US)
Title of host publication2011 IEEE International Symposium on Antennas and Propagation - Proceedings
Pages1173-1176
Number of pages4
DOIs
StatePublished - Nov 1 2011
Externally publishedYes
Event2011 IEEE International Symposium on Antennas and Propagation and USNC/URSI National Radio Science Meeting, APSURSI 2011 - Spokane, WA, United States
Duration: Jul 3 2011Jul 8 2011

Publication series

NameIEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
ISSN (Print)1522-3965

Other

Other2011 IEEE International Symposium on Antennas and Propagation and USNC/URSI National Radio Science Meeting, APSURSI 2011
CountryUnited States
CitySpokane, WA
Period7/3/117/8/11

Keywords

  • Metasurface
  • circular polarizer
  • plasmonics

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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