Gorkunov, Maxim, Antonov, Alexander, Muljarov, Egor ![]() Item availability restricted. |
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Abstract
Dielectric metasurfaces with eigenstates designed to selectively couple to circularly polarized light offer a game-changing platform for advanced chiral metaphotonics. Current designs rely on breaking the mirror symmetry by variable height, elevation or tilt of subwavelength meta-atoms, which complicates their fabrication. We discuss novel strategies for achieving maximum optical chirality with metasurfaces composed of flat layers processed with conventional two-dimensional lithography. Apart from extrinsic-chiral arrangements, which owe their broken mirror symmetry to a sample tilt, various single- and multi-layer designs are capable of maximizing intrinsic chirality at the normal incidence. We reveal specific conditions, when even weak symmetry-breaking effect of a transparent substrate can lead to maximum chirality.
Item Type: | Conference or Workshop Item (Paper) |
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Date Type: | Published Online |
Status: | Published |
Schools: | Physics and Astronomy |
Publisher: | IEEE |
ISBN: | 9798350373493 |
Date of First Compliant Deposit: | 13 January 2025 |
Last Modified: | 13 Jan 2025 10:30 |
URI: | https://orca.cardiff.ac.uk/id/eprint/173180 |
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