Lysenko, O., Bache, M., Olivier, N. orcid.org/0000-0001-9042-5456 et al. (2 more authors) (2016) Nonlinear Dynamics of Ultrashort Long-Range Surface Plasmon Polariton Pulses in Gold Strip Waveguides. ACS Photonics. ISSN 2330-4022
Abstract
We study experimentally and theoretically nonlinear propagation of ultrashort long-range surface plasmon polaritons in gold strip waveguides. The nonlinear absorption of the plasmonic modes in the waveguides is measured with femtosecond pulses revealing a strong dependence of the third-order nonlinear susceptibility of the gold core on the pulse duration and layer thickness. A comprehensive model for the pulse duration dependence of the third-order nonlinear susceptibility is developed on the basis of the nonlinear Schrö dinger equation for plasmonic mode propagation in the waveguides. The model accounts for the intrinsic delayed (noninstantaneous) nonlinearity of free electrons of gold as well as the thickness of the gold film and is experimentally verified. The obtained results are important for the development of active plasmonic and nanophotonic components
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 American Chemical Society. This is an author produced version of a paper subsequently published in ACS Photonics. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | plasmonics; nonlinear optics; ultrafast nonlinearity |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 16 Nov 2016 16:22 |
Last Modified: | 26 Oct 2017 23:51 |
Published Version: | http://doi.org/10.1021/acsphotonics.6b00509 |
Status: | Published |
Publisher: | American Chemical Society |
Refereed: | Yes |
Identification Number: | 10.1021/acsphotonics.6b00509 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:107560 |