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Proceedings Paper

Image theory for plasmon-modified luminescence near nanospheres
Author(s): Zhe Zhang; Derrick Lim; Rodolfo E. Diaz
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Paper Abstract

We present a quasi-static model of the electromagnetic interaction between dipolar emitting molecule and a Plasmon-metal nano-sphere. Based on the image theory of dielectric sphere, we model the Plasmon nano-spheres by off-centered dipole images. The retardation effect is taken into account by electrodynamical modifications on spherical polarizability and dipole radiation field. The modifications of the radiative rate, total decay rate and the quantum yield for the molecules are derived. The image model indicates the strong distance dependence of the enhancement on both radiative and total decay rates. The comparison with the exact electrodynamical model and other simplified models indicate that the off-center image provide accurate predictions on radiative and total decay rates, even in close distances.

Paper Details

Date Published: 22 February 2013
PDF: 8 pages
Proc. SPIE 8595, Colloidal Nanocrystals for Biomedical Applications VIII, 859508 (22 February 2013); doi: 10.1117/12.2004164
Show Author Affiliations
Zhe Zhang, Arizona State Univ. (United States)
Derrick Lim, Arizona State Univ. (United States)
Rodolfo E. Diaz, Arizona State Univ. (United States)

Published in SPIE Proceedings Vol. 8595:
Colloidal Nanocrystals for Biomedical Applications VIII
Wolfgang J. Parak; Marek Osinski; Kenji Yamamoto, Editor(s)

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