Compensation of plasmonic losses in metamaterial using nonlinear interactions
Compensation of plasmonic losses in metamaterial using nonlinear interactions
We demonstrate for the first time that near plasmonic resonances the local field enhancement factor, which controls the efficiency of nonlinear interactions, can have a negative value, thus offering a new way of compensating losses in metamaterials. Using a mode-locked femtosecond laser of only a few mW of average power and a metamaterial structure of asymmetrically split ring apertures in a 50 nm thick gold film we observed a resonant conversion of nonlinear absorption into nonlinear bleaching leading to a 12% increase of the metamaterial’s transmission.
Ren, M.
85c262e2-b760-4b14-bb8e-4747ce7a9d6d
Plum, E.
50761a26-2982-40df-9153-7aecc4226eb5
Xu, J.
caa6a307-ce55-4e76-9da4-0d8be2895651
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
2012
Ren, M.
85c262e2-b760-4b14-bb8e-4747ce7a9d6d
Plum, E.
50761a26-2982-40df-9153-7aecc4226eb5
Xu, J.
caa6a307-ce55-4e76-9da4-0d8be2895651
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Ren, M., Plum, E., Xu, J. and Zheludev, N.I.
(2012)
Compensation of plasmonic losses in metamaterial using nonlinear interactions.
SPIE Photonics Europe 2012, , Brussels, Belgium.
16 - 19 Apr 2012.
Record type:
Conference or Workshop Item
(Paper)
Abstract
We demonstrate for the first time that near plasmonic resonances the local field enhancement factor, which controls the efficiency of nonlinear interactions, can have a negative value, thus offering a new way of compensating losses in metamaterials. Using a mode-locked femtosecond laser of only a few mW of average power and a metamaterial structure of asymmetrically split ring apertures in a 50 nm thick gold film we observed a resonant conversion of nonlinear absorption into nonlinear bleaching leading to a 12% increase of the metamaterial’s transmission.
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Published date: 2012
Venue - Dates:
SPIE Photonics Europe 2012, , Brussels, Belgium, 2012-04-16 - 2012-04-19
Organisations:
Optoelectronics Research Centre
Identifiers
Local EPrints ID: 365095
URI: http://eprints.soton.ac.uk/id/eprint/365095
PURE UUID: 4f4d5297-76d1-434f-8d78-6827b6136eaa
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Date deposited: 22 May 2014 10:30
Last modified: 05 Apr 2022 01:41
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Contributors
Author:
M. Ren
Author:
E. Plum
Author:
J. Xu
Author:
N.I. Zheludev
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