Observation of beam self-induced transition from positive to negative optical refraction in nematic liquid crystals
Observation of beam self-induced transition from positive to negative optical refraction in nematic liquid crystals
We demonstrate that light refraction at a straight interface between an isotropic dielectric and a nematic liquid crystal can change from positive to negative depending on power. The phenomenon relies on the reorientational response and the all-optical rotation of the optic axis, causing in turn variations in walk-off and beam self-steering.
nematic liquid crystals, negative refraction, optical solitons, nematicons, self-steering, signal routing
28-34
Kravets, Nina
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Piccardi, Armando
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Alberucci, Alessandro
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Buchnev, Oleksandr
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Assanto, Gaetano
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23 October 2015
Kravets, Nina
d8a09747-9b2f-4935-92de-2f669609e5dd
Piccardi, Armando
745f16e1-faaa-4405-b99d-a1ecbfd9e582
Alberucci, Alessandro
6724255e-f380-4a32-af24-911323cb7e98
Buchnev, Oleksandr
60cdb0d2-3388-47be-a066-61b3b396f69d
Assanto, Gaetano
c89823fa-c863-4ff3-aea0-915fa5852df2
Kravets, Nina, Piccardi, Armando, Alberucci, Alessandro, Buchnev, Oleksandr and Assanto, Gaetano
(2015)
Observation of beam self-induced transition from positive to negative optical refraction in nematic liquid crystals.
[in special issue: 5th Workshop on Liquid Crystals for Photonics]
Molecular Crystals and Liquid Crystals, 619 (1), .
(doi:10.1080/15421406.2015.1088761).
Abstract
We demonstrate that light refraction at a straight interface between an isotropic dielectric and a nematic liquid crystal can change from positive to negative depending on power. The phenomenon relies on the reorientational response and the all-optical rotation of the optic axis, causing in turn variations in walk-off and beam self-steering.
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Published date: 23 October 2015
Keywords:
nematic liquid crystals, negative refraction, optical solitons, nematicons, self-steering, signal routing
Organisations:
Optoelectronics Research Centre
Identifiers
Local EPrints ID: 385776
URI: http://eprints.soton.ac.uk/id/eprint/385776
ISSN: 1542-1406
PURE UUID: 4b0c3140-de31-47bd-bdb7-072f9f4a61db
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Date deposited: 13 Jan 2016 11:04
Last modified: 14 Mar 2024 22:22
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Contributors
Author:
Nina Kravets
Author:
Armando Piccardi
Author:
Alessandro Alberucci
Author:
Oleksandr Buchnev
Author:
Gaetano Assanto
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