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Electromagnetic energy transport below the diffraction limit in periodic metal nanostructures

Maier, Stefan A. and Kik, Pieter G. and Brongersma, Mark L. and Atwater, Harry A. (2001) Electromagnetic energy transport below the diffraction limit in periodic metal nanostructures. In: Controlling and Using Light in Nanometric Domains. Proceedings of SPIE. No.4456. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 22-30. ISBN 0819441708. https://resolver.caltech.edu/CaltechAUTHORS:20180706-154133288

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Abstract

We investigate the possibility of using arrays of closely spaced metal nanoparticles as waveguides for electromagnetic energy below the diffraction limit of visible light. Coupling between adjacent particles sets up coupled plasmon modes that give rise to coherent propagation of energy along the array. A point dipole analysis predicts group velocities of energy transport that exceed 0.1c along straight arrays and shows that energy transmission through chain networks such as corners and tee structures is possible at high efficiencies. Although radiation losses into the far field are negligible due to the near-field nature of the coupling, resistive heating leads to transmission losses of about 3 dB/500 nm for gold and silver particles. We confirmed the predictions of this analytical model using numeric finite difference time domain (FDTD) simulations. Also, we have fabricated gold nanoparticle arrays using electron beam lithography to study this type of electromagnetic energy transport. A modified illumination near field scanning optical microscope (NSOM) was used as a local excitation source of a nanoparticle in these arrays. Transport is studied by imaging the fluorescence of dye-filled latex beads positioned next to the nanoparticle arrays. We report on initial experiments of this kind.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.449534DOIArticle
ORCID:
AuthorORCID
Atwater, Harry A.0000-0001-9435-0201
Additional Information:© 2001 Society of Photo-Optical Instrumentation Engineers (SPIE). This work was sponsored by the National Science Foundation.
Funders:
Funding AgencyGrant Number
NSFUNSPECIFIED
Subject Keywords:NSOM, near-field optics, metal nanoparticle, surface plasmon, plasmon waveguide
Series Name:Proceedings of SPIE
Issue or Number:4456
Record Number:CaltechAUTHORS:20180706-154133288
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20180706-154133288
Official Citation:Stefan A. Maier, Pieter G. Kik, Mark L. Brongersma, Harry A. Atwater, "Electromagnetic energy transport below the diffraction limit in periodic metal nanostructures", Proc. SPIE 4456, Controlling and Using Light in Nanometric Domains, (5 December 2001); doi: 10.1117/12.449534; https://doi.org/10.1117/12.449534
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:87622
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:09 Jul 2018 15:55
Last Modified:03 Oct 2019 19:58

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