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Hotspot-mediated ultrafast nonlinear control of multifrequency plasmonic nanoantennas

Hotspot-mediated ultrafast nonlinear control of multifrequency plasmonic nanoantennas
Hotspot-mediated ultrafast nonlinear control of multifrequency plasmonic nanoantennas
Plasmonic devices have a unique ability to concentrate and convert optical energy into a small volume. There is a tremendous interest in achieving active control of plasmon resonances, which would enable switchable hotspots for applications such as surface-enhanced spectroscopy and single molecule emission. The small footprint and strong-field confinement of plasmonic nanoantennas also holds great potential for achieving transistor-type devices for nanoscale-integrated circuits. To achieve such a functionality, new methods for nonlinear modulation are required, which are able to precisely tune the nonlinear interactions between resonant antenna elements. Here we demonstrate that resonant pumping of a nonlinear medium in a plasmonic hotspot produces an efficient transfer of optical Kerr nonlinearity between different elements of a multifrequency antenna. By spatially and spectrally separating excitation and readout, isolation of the hotspot-mediated ultrafast Kerr nonlinearity from slower, thermal effects is achieved.
physical sciences, nanotechnology, optical physics
1-8
Abb, Martina
d1aa3add-7761-4c4f-8a3d-7da3084deb33
Wang, Yudong
c48bcc7c-4cb4-468c-af4e-d1e601222009
de Groot, C.H.
92cd2e02-fcc4-43da-8816-c86f966be90c
Muskens, Otto L.
2284101a-f9ef-4d79-8951-a6cda5bfc7f9
Abb, Martina
d1aa3add-7761-4c4f-8a3d-7da3084deb33
Wang, Yudong
c48bcc7c-4cb4-468c-af4e-d1e601222009
de Groot, C.H.
92cd2e02-fcc4-43da-8816-c86f966be90c
Muskens, Otto L.
2284101a-f9ef-4d79-8951-a6cda5bfc7f9

Abb, Martina, Wang, Yudong, de Groot, C.H. and Muskens, Otto L. (2014) Hotspot-mediated ultrafast nonlinear control of multifrequency plasmonic nanoantennas. Nature Communications, 5 (4869), 1-8, [4869]. (doi:10.1038/ncomms5869).

Record type: Article

Abstract

Plasmonic devices have a unique ability to concentrate and convert optical energy into a small volume. There is a tremendous interest in achieving active control of plasmon resonances, which would enable switchable hotspots for applications such as surface-enhanced spectroscopy and single molecule emission. The small footprint and strong-field confinement of plasmonic nanoantennas also holds great potential for achieving transistor-type devices for nanoscale-integrated circuits. To achieve such a functionality, new methods for nonlinear modulation are required, which are able to precisely tune the nonlinear interactions between resonant antenna elements. Here we demonstrate that resonant pumping of a nonlinear medium in a plasmonic hotspot produces an efficient transfer of optical Kerr nonlinearity between different elements of a multifrequency antenna. By spatially and spectrally separating excitation and readout, isolation of the hotspot-mediated ultrafast Kerr nonlinearity from slower, thermal effects is achieved.

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More information

Accepted/In Press date: 31 July 2014
Published date: 5 September 2014
Keywords: physical sciences, nanotechnology, optical physics
Organisations: Electronics & Computer Science, Quantum, Light & Matter Group

Identifiers

Local EPrints ID: 369482
URI: http://eprints.soton.ac.uk/id/eprint/369482
PURE UUID: 0ec8f93a-3e6e-46e4-af06-aed11289b778
ORCID for C.H. de Groot: ORCID iD orcid.org/0000-0002-3850-7101
ORCID for Otto L. Muskens: ORCID iD orcid.org/0000-0003-0693-5504

Catalogue record

Date deposited: 01 Oct 2014 10:13
Last modified: 19 Nov 2019 01:50

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