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
Sámson, Z.L.
baef8935-31da-42a5-9772-53f28dfe5672
MacDonald, Kevin F.
76c84116-aad1-4973-b917-7ca63935dba5
Zheludev, N.I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
November 2009
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), [114031].
(doi:10.1088/1464-4258/11/11/114031).
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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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: http://eprints.soton.ac.uk/id/eprint/70888
ISSN: 1741-3567
PURE UUID: 01411b92-9a11-4361-b7a8-cb8375cb4124
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Date deposited: 24 Feb 2010
Last modified: 14 Mar 2024 02:43
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Author:
Z.L. Sámson
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