Terahertz polarimetry with a monolithic metasurface

Nowack, T. S. , Shah, Y. D. , Escorcia, I. , Grant, J. P. , Kenney, M. , Pusino, V. , Faccio, D. , Wasige, E. and Cumming, D. R.S. (2022) Terahertz polarimetry with a monolithic metasurface. Optics Letters, 47(16), pp. 4199-4202. (doi: 10.1364/OL.463143)

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The state of polarization (SoP) is a fundamental property of electromagnetic radiation that can carry a rich set of important information in light transmitted through a test sample. Despite a wide range of applications in material identification, (thin-film) characterization, and defect analysis, the SoP remains difficult to exploit—especially at terahertz frequencies since its measurement requires complex apparatuses with multiple moving parts. We have addressed these challenges by designing a metasurface polarimeter (MSP) that incorporates the entire functionality of a division of aperture polarimeter (DoAP) with high efficiency into a single silicon layer without the need for moving parts. Collective simulations are in perfect agreement with experimental data, both confirming the intended operation. Furthermore, we present an automated analysis algorithm that allows for the complete determination of the SoP from a single image with an experimental accuracy of 92.1% ± 4.2%, following an initial calibration. We anticipate that the presented MSP will find applications in polarimetric sensing and imaging for non-destructive evaluation at terahertz frequencies.

Item Type:Articles
Additional Information:This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No. 765426 (TeraApps) and the UK Quantum Technology Hub in Quantum Imaging (EP/T00097X/1).
Glasgow Author(s) Enlighten ID:Wasige, Professor Edward and Nowack, Mr Thomas and Kenney, Dr Mitchell Guy and Escorcia Carranza, Dr Ivonne and Grant, Dr James and Cumming, Professor David and Faccio, Professor Daniele and Shah, Dr Yash Diptesh and Pusino, Dr Vincenzo
Authors: Nowack, T. S., Shah, Y. D., Escorcia, I., Grant, J. P., Kenney, M., Pusino, V., Faccio, D., Wasige, E., and Cumming, D. R.S.
College/School:College of Science and Engineering > School of Engineering
College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
College of Science and Engineering > School of Engineering > James Watt Nanofabrication Centre
College of Science and Engineering > School of Physics and Astronomy
Journal Name:Optics Letters
Publisher:Optical Society of America
ISSN (Online):1539-4794
Published Online:22 June 2022
Copyright Holders:Copyright © 2022 The Authors
First Published:First published in Optics Letters 47(16): 4199-4202
Publisher Policy:Reproduced under a Creative Commons License
Data DOI:10.5525/gla.researchdata.1301

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
305567QuantIC - The UK Quantum Technoogy Hub in Quantum Enhanced ImagingMiles PadgettEngineering and Physical Sciences Research Council (EPSRC)EP/T00097X/1P&S - Physics & Astronomy