Fluorescent dyes as a probe for the localized field of coupled surface plasmon-related resonances

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Fluorescent dyes as a probe for the localized field of coupled surface plasmon-related resonances

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Title: Fluorescent dyes as a probe for the localized field of coupled surface plasmon-related resonances
Author: Kreiter, M.
Neumann, T.
Mittler, S.
Knoll, W.
Sambles, J. Roy
Citation: 64 (7), article 075406
Publisher: American Physical Society
Journal: Physical Review B
Date Issued: 2001
URI: http://hdl.handle.net/10036/31455
DOI: 10.1103/PhysRevB.64.075406
Links: http://dx.doi.org/10.1103/PhysRevB.64.075406 http://link.aps.org/abstract/PRB/v64/e075406
Abstract: The fluorescence light of Cy5 dye molecules in the vicinity of a metal grating is studied for varying directions of both the exciting and the emitted light. A different angular dependence of the intensity of the emitted light is observed for different directions of excitation. Model calculations that take into account the localization of the electrical field of grating-coupled surface plasmon-related resonances are in good agreement with the experimental observations. In addition, the spatially inhomogenous photobleaching of the dye in the field of the coupled resonances is experimentally observed. These results can be viewed both as a way to use chromophores as molecular probes for the localized electrical near field of coupled surface plasmon-related resonances and as a way to manipulate dye molecules on a submicron scale.
Type: Article
Description: M. Kreiter, T. Neumann, S. Mittler, W. Knoll, and J. Roy Sambles, Physical Review B, Vol. 64, article 075406 (2001). "Copyright © 2001 by the American Physical Society."
ISSN: 1098-01211550-235X


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