Tunable Polarization Conversion and Rotation based on a Reconfigurable Metasurface

Polarization is an important property of electromagnetic (EM) wave and different polarization manipulations are required for varied optical applications. Here we report a reconfigurable metasurface which achieves both the polarization conversion and the polarization rotation in THz regime. The metas...

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Bibliographic Details
Published in:Scientific reports 2017-09, Vol.7 (1), p.12068-7, Article 12068
Main Authors: Zhang, M., Zhang, W., Liu, A. Q., Li, F. C., Lan, C. F.
Format: Article
Language:English
Subjects:
639/624/399/1015
639/624/400/1021
Electric fields
Engineering
Humanities and Social Sciences
Microelectromechanical systems
multidisciplinary
Polarization
Science
Science (multidisciplinary)
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Summary:Polarization is an important property of electromagnetic (EM) wave and different polarization manipulations are required for varied optical applications. Here we report a reconfigurable metasurface which achieves both the polarization conversion and the polarization rotation in THz regime. The metasurface is reconfigured through the micro-electro-mechanical-systems (MEMS) actuation. The cross polarization transmittance from a linear polarized incidence is experimentally tuned from 0 to 28% at 2.66 THz. In addition, the polarization rotation angle is effectively changed from −12.8° to 13.1° at 1.78 THz. The tunable bi-functional metasurface for polarization conversion and the polarization rotation can be flexibly applied in various applications such as imaging, polarization microscopy and material analysis, etc.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-017-11953-z