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Geometries for the coherent control of four-wave mixing in graphene multilayers

Geometries for the coherent control of four-wave mixing in graphene multilayers
Geometries for the coherent control of four-wave mixing in graphene multilayers
Deeply sub-wavelength two-dimensional films may exhibit extraordinarily strong nonlinear effects. Here we show that 2D films exhibit the remarkable property of a phase-controllable nonlinearity, i.e., the amplitude of the nonlinear polarisation wave in the medium can be controlled via the pump beam phase and determines whether a probe beam will "feel" or not the nonlinearity. This is in stark contrast to bulk nonlinearities where propagation in the medium averages out any such phase dependence. We perform a series of experiments in multilayer graphene that highlight some of the consequences of the optical nonlinearity phase-dependence, such as the coherent control of nonlinearly diffracted beams, single-pump-beam induced phase-conjugation and the demonstration of a nonlinear mirror characterised by negative reflection. The observed phase sensitivity is not specific to graphene but rather is solely a result of the dimensionality and is therefore expected in all 2D materials.
1-8
Rao, Shraddha M.
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Lyons, Ashley
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Roger, Thomas
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Clerici, Matteo
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Zheludev, Nikolay I.
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Faccio, Daniele
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Rao, Shraddha M.
2ddb9c5a-f371-4d57-a9cf-1fbf3989022e
Lyons, Ashley
6e8ef6ab-d565-4922-a159-0dc766df038c
Roger, Thomas
b7d10549-0531-4dde-b335-c998b6fd38e8
Clerici, Matteo
8ef29b6b-901f-4577-8527-840d7d0d7e0c
Zheludev, Nikolay I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Faccio, Daniele
4bc95171-0d90-4392-8333-528cbcb80e84

Rao, Shraddha M., Lyons, Ashley, Roger, Thomas, Clerici, Matteo, Zheludev, Nikolay I. and Faccio, Daniele (2015) Geometries for the coherent control of four-wave mixing in graphene multilayers. Scientific Reports, 5 (15399), 1-8. (doi:10.1038/srep15399).

Record type: Article

Abstract

Deeply sub-wavelength two-dimensional films may exhibit extraordinarily strong nonlinear effects. Here we show that 2D films exhibit the remarkable property of a phase-controllable nonlinearity, i.e., the amplitude of the nonlinear polarisation wave in the medium can be controlled via the pump beam phase and determines whether a probe beam will "feel" or not the nonlinearity. This is in stark contrast to bulk nonlinearities where propagation in the medium averages out any such phase dependence. We perform a series of experiments in multilayer graphene that highlight some of the consequences of the optical nonlinearity phase-dependence, such as the coherent control of nonlinearly diffracted beams, single-pump-beam induced phase-conjugation and the demonstration of a nonlinear mirror characterised by negative reflection. The observed phase sensitivity is not specific to graphene but rather is solely a result of the dimensionality and is therefore expected in all 2D materials.

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Accepted/In Press date: 16 September 2015
Published date: 21 October 2015
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 386181
URI: https://eprints.soton.ac.uk/id/eprint/386181
PURE UUID: d48347a8-4264-49c8-b1e2-b05edee4b128
ORCID for Nikolay I. Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

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Date deposited: 21 Jan 2016 10:00
Last modified: 20 Jul 2019 01:22

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