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Proceedings Paper

Polarization to the field enhancement by a gold dimer
Author(s): Xin Hong; Zheng Jin
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Paper Abstract

Due to the effect of plasmonic coupling, gold nanoparticle dimers have been paid more attentions in bio-imaging. The coupling effect existing at the gap between a closely linked particle pair can make the local field strongly enhanced and in which the angle between the excitation polarization and the dimer axis plays a dominant role. We calculated the amplitude distribution under a highly focused illumination objective. The simulation results show that for such a model, 45 degrees between the excitation polarization and the dimer axis can produce an optimum signal. The enhancement thus obtained is ~10.78 fold while the variation between peak-peak can reach 6.59 fold compared to a single plasmoic particle during the rotation of the polarization.

Paper Details

Date Published: 3 November 2016
PDF: 6 pages
Proc. SPIE 10028, Plasmonics II, 1002814 (3 November 2016); doi: 10.1117/12.2244498
Show Author Affiliations
Xin Hong, Dalian Univ. of Technology (China)
Zheng Jin, Dalian Univ. of Technology (China)

Published in SPIE Proceedings Vol. 10028:
Plasmonics II
Hongxing Xu; Satoshi Kawata; David J. Bergman; Xing Zhu, Editor(s)

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