Metasurface-based optical liquid crystal cell as an ultrathin spatial phase modulator for THz applications
Metasurface-based optical liquid crystal cell as an ultrathin 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.
3199–3206
Buchnev, Oleksandr
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Podoliak, Nina
0908b951-00a7-48a5-bc82-631640910b9c
Kaltenecker, Korbinian
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Walther, Markus
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Fedotov, Vassili
3725f5cc-2d0b-4e61-95c5-26d187c84f25
18 November 2020
Buchnev, Oleksandr
60cdb0d2-3388-47be-a066-61b3b396f69d
Podoliak, Nina
0908b951-00a7-48a5-bc82-631640910b9c
Kaltenecker, Korbinian
47d7c41e-5fd8-43b1-9234-b7f98792aa41
Walther, Markus
7fa1a6aa-41de-42cf-a06c-f4a2c7c264c9
Fedotov, Vassili
3725f5cc-2d0b-4e61-95c5-26d187c84f25
Buchnev, Oleksandr, Podoliak, Nina, Kaltenecker, Korbinian, Walther, Markus and Fedotov, Vassili
(2020)
Metasurface-based optical liquid crystal cell as an ultrathin 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
Buchnev-2020-ACS Photonics
- Accepted Manuscript
More information
e-pub ahead of print date: 9 November 2020
Published date: 18 November 2020
Identifiers
Local EPrints ID: 449906
URI: http://eprints.soton.ac.uk/id/eprint/449906
ISSN: 2330-4022
PURE UUID: a7545b42-a9b4-43e7-aab1-9e9d0b36b5e3
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Date deposited: 24 Jun 2021 16:31
Last modified: 18 Nov 2021 05:01
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Contributors
Author:
Oleksandr Buchnev
Author:
Nina Podoliak
Author:
Korbinian Kaltenecker
Author:
Markus Walther
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