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THz bandwidth optical switching with carbon nanotube metamaterial

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), pp. 6068-6079. (doi:10.1364/OE.20.006068).

Record type: Article


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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Published date: 12 March 2012
Organisations: Optoelectronics Research Centre


Local EPrints ID: 336494
ISSN: 1094-4087
PURE UUID: 22ecfdcd-f544-4dab-9c44-db761abc23cc
ORCID for Nikitas Papasimakis: ORCID iD

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Date deposited: 28 Mar 2012 10:41
Last modified: 18 Jul 2017 06:07

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Author: Andrey E. Nikolaenko
Author: Nikitas Papasimakis ORCID iD
Author: Arkadi Chipouline
Author: Francesco De Angelis
Author: Enzo Di Fabrizio

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