Metasurface-based optical liquid crystal cell as an ultra-thin spatial phase modulator for THz applications
Metasurface-based optical liquid crystal cell as an ultra-thin spatial phase modulator for THz applications
A concept of an efficient ultra-thin spatial phase modulator for correcting terahertz wavefronts in transmission with sub-wavelength spatial resolution is experimentally demonstrated. It exploits a combination of spatially addressable resonant planar metamaterials (so-called metasurfaces) and an optically thin (< 0.04 λ) low-voltage (< 20 V) liquid crystal cell. The device allows ‘imprinting’ 2D phase profile of any spatial complexity with a spatial resolution better than 0.23 λ, and can be readily fabricated using the well-established LC-device technology and high-resolution photolithography technique.
hybrid metamaterials, liquid crystal devices, planar metamaterials, spatial light modulators, terahertz
3199-3206
Buchnev, Oleksandr
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Podoliak, Nina
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Kaltenecker, Korbian
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Walther, M.
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Fedotov, Vassili
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Buchnev, Oleksandr
60cdb0d2-3388-47be-a066-61b3b396f69d
Podoliak, Nina
0908b951-00a7-48a5-bc82-631640910b9c
Kaltenecker, Korbian
920dc0c5-00bf-408d-9237-f182a17cf2f7
Walther, M.
79136385-d7a0-4d2e-923e-45cb852b7938
Fedotov, Vassili
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Buchnev, Oleksandr, Podoliak, Nina, Kaltenecker, Korbian, Walther, M. and Fedotov, Vassili
(2020)
Metasurface-based optical liquid crystal cell as an ultra-thin spatial phase modulator for THz applications.
ACS Photonics, 7 (11), .
(doi:10.1021/acsphotonics.0c01263).
Abstract
A concept of an efficient ultra-thin spatial phase modulator for correcting terahertz wavefronts in transmission with sub-wavelength spatial resolution is experimentally demonstrated. It exploits a combination of spatially addressable resonant planar metamaterials (so-called metasurfaces) and an optically thin (< 0.04 λ) low-voltage (< 20 V) liquid crystal cell. The device allows ‘imprinting’ 2D phase profile of any spatial complexity with a spatial resolution better than 0.23 λ, and can be readily fabricated using the well-established LC-device technology and high-resolution photolithography technique.
Text
Manuscript Buchnev THz SPM
- Accepted Manuscript
More information
Accepted/In Press date: 2020
e-pub ahead of print date: 9 November 2020
Keywords:
hybrid metamaterials, liquid crystal devices, planar metamaterials, spatial light modulators, terahertz
Identifiers
Local EPrints ID: 444960
URI: http://eprints.soton.ac.uk/id/eprint/444960
ISSN: 2330-4022
PURE UUID: b85e6d7c-8e81-4557-ad11-d517e9e68452
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Date deposited: 13 Nov 2020 17:30
Last modified: 28 Apr 2022 05:15
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Contributors
Author:
Oleksandr Buchnev
Author:
Nina Podoliak
Author:
Korbian Kaltenecker
Author:
M. Walther
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