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4 October 2023 Breaking the efficiency limit of polarisers with a single-layer metasurface
Neuton Li, Shaun Lung, Jihua Zhang, Dragomir Neshev, Andrey Sukhorukov
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Proceedings Volume PC12646, Metamaterials, Metadevices, and Metasystems 2023; PC126460H (2023) https://doi.org/10.1117/12.2677196
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States
Abstract
We develop and experimentally realise a single-layer metasurface that converts unpolarised light into fully polarised light surpassing the efficiency limit of 50% for conventional polarisers. We achieve this by using an inverse-designed metasurface that splits incoming light into multiple outputs with the same polarisation. We predict a greater than 80% conversion efficiency when combining the powers of two or three outputs. We fabricate the freeform silicon metasurface and experimentally measure a combined efficiency of over 60% in converting unpolarised light to polarised light at 1550 nm with an overall extinction ratio 20.
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(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Neuton Li, Shaun Lung, Jihua Zhang, Dragomir Neshev, and Andrey Sukhorukov "Breaking the efficiency limit of polarisers with a single-layer metasurface", Proc. SPIE PC12646, Metamaterials, Metadevices, and Metasystems 2023, PC126460H (4 October 2023); https://doi.org/10.1117/12.2677196
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KEYWORDS
Polarization
Polarizers
Dielectrics
Polarized light
Light emitting diodes
Mathematical optimization
Numerical modeling
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