Tunable polarization conversion and rotation based on a reconfigurable metasurface

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
Main Authors: Zhang, M., Zhang, Wu, Liu, Ai Qun, Li, F. C., Lan, C. F.
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2018
Subjects:
DRNTU::Engineering::Electrical and electronic engineering
Polarization Microscopy
Rotation
Online Access:https://hdl.handle.net/10356/88286
http://hdl.handle.net/10220/45725
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Institution: Nanyang Technological University
Language: English
Description
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.

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