THz bandwidth optical switching with carbon nanotube metamaterial
THz bandwidth optical switching with carbon nanotube metamaterial
We provide the first demonstration of exceptional light-with light optical switching performance of a carbon nanotube metamaterial - a hybrid nanostructure of a plasmonic metamaterial with semiconducting single-walled carbon nanotubes. A modulation depth of 10% in the near-IR with sub-500 fs response time is achieved with a pump fluence of just 10 µJ/cm2, which is an order of magnitude lower than in previously reported artificial nanostructures. The improved switching characteristics of the carbon nanotube metamaterial are defined by an excitonic nonlinearity of carbon nanotubes resonantly enhanced by a concentration of local fields in the metamaterial. Since the spectral position of the excitonic response and metamaterial plasmonic resonance can be adjusted by using carbon nanotubes of different diameter and scaling of the metamaterial design, the giant nonlinear response of the hybrid metamaterial - in principle - can be engineered to cover the entire second and third telecom windows, from O- to U-band.
6068-6079
Nikolaenko, Andrey E.
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Papasimakis, Nikitas
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Chipouline, Arkadi
accb40ee-f56f-438d-8a61-5a2dc23f6159
De Angelis, Francesco
608d1dd9-7de7-459d-b2a5-7fbc84880d51
Di Fabrizio, Enzo
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Zheludev, Nikolay I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
12 March 2012
Nikolaenko, Andrey E.
62341850-7828-48f6-8d5a-3778f44d170c
Papasimakis, Nikitas
f416bfa9-544c-4a3e-8a2d-bc1c11133a51
Chipouline, Arkadi
accb40ee-f56f-438d-8a61-5a2dc23f6159
De Angelis, Francesco
608d1dd9-7de7-459d-b2a5-7fbc84880d51
Di Fabrizio, Enzo
76c7aa20-ce4d-4058-9da5-56cadd890cef
Zheludev, Nikolay I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Nikolaenko, Andrey E., Papasimakis, Nikitas, Chipouline, Arkadi, De Angelis, Francesco, Di Fabrizio, Enzo and Zheludev, Nikolay I.
(2012)
THz bandwidth optical switching with carbon nanotube metamaterial.
Optics Express, 20 (6), .
(doi:10.1364/OE.20.006068).
Abstract
We provide the first demonstration of exceptional light-with light optical switching performance of a carbon nanotube metamaterial - a hybrid nanostructure of a plasmonic metamaterial with semiconducting single-walled carbon nanotubes. A modulation depth of 10% in the near-IR with sub-500 fs response time is achieved with a pump fluence of just 10 µJ/cm2, which is an order of magnitude lower than in previously reported artificial nanostructures. The improved switching characteristics of the carbon nanotube metamaterial are defined by an excitonic nonlinearity of carbon nanotubes resonantly enhanced by a concentration of local fields in the metamaterial. Since the spectral position of the excitonic response and metamaterial plasmonic resonance can be adjusted by using carbon nanotubes of different diameter and scaling of the metamaterial design, the giant nonlinear response of the hybrid metamaterial - in principle - can be engineered to cover the entire second and third telecom windows, from O- to U-band.
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oe-20-6-6068
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Published date: 12 March 2012
Organisations:
Optoelectronics Research Centre
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Local EPrints ID: 336494
URI: http://eprints.soton.ac.uk/id/eprint/336494
ISSN: 1094-4087
PURE UUID: 22ecfdcd-f544-4dab-9c44-db761abc23cc
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Date deposited: 28 Mar 2012 10:41
Last modified: 15 Mar 2024 03:28
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Contributors
Author:
Andrey E. Nikolaenko
Author:
Nikitas Papasimakis
Author:
Arkadi Chipouline
Author:
Francesco De Angelis
Author:
Enzo Di Fabrizio
Author:
Nikolay I. Zheludev
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