Frequency-Controllable Polarization Rotation of THz Waves with an SCMS

Andrey Sayanskiy, Sergei A. Kuznetsov, Daria S. Tanygina, Juan P. Del Risco, Stanislav Glybovski, Juan D. Baena

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

In this article, we theoretically and experimentally study the conversion from a circularly polarized (CP) plane electromagnetic wave into a linearly polarized (LP) transmitted one using anisotropic self-complementary metasurfaces. For this purpose, a metasurface design operable at sub-terahertz frequencies is proposed and investigated in the range of 230-540 GHz. The metasurface is composed of alternating complementary rectangular patches and apertures patterned in an aluminum layer deposited on a thin polypropylene film. Our study shows that the translational symmetry of the metasurface results in unusual and useful electromagnetic properties under illumination with CP radiation beams. In particular, alongside with broadband circular-to-linear conversion, the transmitted wave exhibits a frequency-independent magnitude, while its polarization angle gradually changes with frequency that paves the way for new beam-splitting applications.

Original languageEnglish
Article number8884637
Pages (from-to)1491-1502
Number of pages12
JournalIEEE Transactions on Antennas and Propagation
Volume68
Issue number3
DOIs
Publication statusPublished - Mar 2020

Keywords

  • Circular polarization
  • cross polarization
  • linear polarization
  • metasurface (MS)
  • terahertz range

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