Mimicking longitudinal MOKE with metasurfaces
Mimicking longitudinal MOKE with metasurfaces
Specular optical activity manifests itself as the rotation of light polarization when reflecting from chiral materials and diffusive scattering from chiral liquids. The effect is generally extremely weak, especially in the visible domain. Here we demonstrate strong specular optical activity at the wavelength of 660nm in achiral non-magnetic metasurfaces featuring nano-scale periodic slit patterns milled into a gold film. We reveal through experiment and simulations that the metasurfaces with reduced structural symmetry are able to induce directionally dependent polarization rotation with magnitude of ~1°, which mimics longitudinal MOKE in magnetized films.
Gorecki, Jonathan
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Frank, Thomas
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Buchnev, Oleksandr
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Stenning, Gavin
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Kaczmarek, Malgosia
408ec59b-8dba-41c1-89d0-af846d1bf327
Fedotov, Vassili
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Gorecki, Jonathan
6f68dd34-2d89-4063-baf6-8bb6cf8ccfe8
Frank, Thomas
3d1aae1b-7dd5-4ee3-8f06-c5a7f0acbe6f
Buchnev, Oleksandr
60cdb0d2-3388-47be-a066-61b3b396f69d
Stenning, Gavin
1b8ebbf6-4d05-484d-90b3-7d9a76bee911
Kaczmarek, Malgosia
408ec59b-8dba-41c1-89d0-af846d1bf327
Fedotov, Vassili
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Gorecki, Jonathan, Frank, Thomas, Buchnev, Oleksandr, Stenning, Gavin, Kaczmarek, Malgosia and Fedotov, Vassili
(2021)
Mimicking longitudinal MOKE with metasurfaces.
In SPIE Optics + Photonics 2021.
(In Press)
Record type:
Conference or Workshop Item
(Paper)
Abstract
Specular optical activity manifests itself as the rotation of light polarization when reflecting from chiral materials and diffusive scattering from chiral liquids. The effect is generally extremely weak, especially in the visible domain. Here we demonstrate strong specular optical activity at the wavelength of 660nm in achiral non-magnetic metasurfaces featuring nano-scale periodic slit patterns milled into a gold film. We reveal through experiment and simulations that the metasurfaces with reduced structural symmetry are able to induce directionally dependent polarization rotation with magnitude of ~1°, which mimics longitudinal MOKE in magnetized films.
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Accepted/In Press date: 11 May 2021
Identifiers
Local EPrints ID: 449343
URI: http://eprints.soton.ac.uk/id/eprint/449343
PURE UUID: 04b41471-7be7-4d76-bc27-58bffed1dad9
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Date deposited: 25 May 2021 16:34
Last modified: 19 Dec 2023 03:06
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Contributors
Author:
Jonathan Gorecki
Author:
Thomas Frank
Author:
Oleksandr Buchnev
Author:
Gavin Stenning
Author:
Vassili Fedotov
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