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Femtosecond active plasmonics: ultrafast control of surface plasmon propagation

Femtosecond active plasmonics: ultrafast control of surface plasmon propagation
Femtosecond active plasmonics: ultrafast control of surface plasmon propagation
Excitation of an aluminium/dielectric plasmonic waveguide with 200 fs optical pulses leads to the transient modulation of surface plasmon-polariton signals propagating in the waveguide. We show that by tuning the excitation wavelength to aluminium's interband absorption peak at ~1.5 eV, a modulation depth of more than 35% can be achieved at an excitation fluence of 13 mJ/cm2. 'Fast' (femtosecond) and 'slow' (picosecond) modulation response components are observed.
surface plasmon-polaritons, active plasmonics, nonlinear optics
1741-3567
Sámson, Z.L.
baef8935-31da-42a5-9772-53f28dfe5672
MacDonald, Kevin F.
76c84116-aad1-4973-b917-7ca63935dba5
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
Sámson, Z.L.
baef8935-31da-42a5-9772-53f28dfe5672
MacDonald, Kevin F.
76c84116-aad1-4973-b917-7ca63935dba5
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6

Sámson, Z.L., MacDonald, Kevin F. and Zheludev, N.I. (2009) Femtosecond active plasmonics: ultrafast control of surface plasmon propagation. Journal of Optics A: Pure and Applied Optics, 11 (11). (doi:10.1088/1464-4258/11/11/114031).

Record type: Article

Abstract

Excitation of an aluminium/dielectric plasmonic waveguide with 200 fs optical pulses leads to the transient modulation of surface plasmon-polariton signals propagating in the waveguide. We show that by tuning the excitation wavelength to aluminium's interband absorption peak at ~1.5 eV, a modulation depth of more than 35% can be achieved at an excitation fluence of 13 mJ/cm2. 'Fast' (femtosecond) and 'slow' (picosecond) modulation response components are observed.

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More information

e-pub ahead of print date: 17 September 2009
Published date: November 2009
Keywords: surface plasmon-polaritons, active plasmonics, nonlinear optics

Identifiers

Local EPrints ID: 70888
URI: https://eprints.soton.ac.uk/id/eprint/70888
ISSN: 1741-3567
PURE UUID: 01411b92-9a11-4361-b7a8-cb8375cb4124
ORCID for Kevin F. MacDonald: ORCID iD orcid.org/0000-0002-3877-2976
ORCID for N.I. Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 24 Feb 2010
Last modified: 14 Nov 2019 01:39

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