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Proceedings Paper

Iteratively optimized nonperiodic plasmon resonant nanostructures
Author(s): Prathamesh Pavaskar; Stephen B. Cronin
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Paper Abstract

FDTD simulations are performed on two-dimensional clusters of plasmonic metal nanoparticles in response to incident planewave irradiation. Using an iterative optimization algorithm, we determine the spatial configuration of the nanoparticles that gives the maximum electric field intensity at the center of the cluster. The optimum configurations of these clusters have mirror symmetry about the axis of planewave propagation, but are otherwise non-symmetric and non-intuitive. The optimized electric field intensity increases monotonically with the number of nanoparticles in the cluster, producing surface enhanced Raman spectroscopy (SERS) enhancements that are 25 times larger than linear chains of nanoparticles and 6 million times larger than the incident electromagnetic field.

Paper Details

Date Published: 23 January 2010
PDF: 10 pages
Proc. SPIE 7608, Quantum Sensing and Nanophotonic Devices VII, 760818 (23 January 2010); doi: 10.1117/12.843598
Show Author Affiliations
Prathamesh Pavaskar, The Univ. of Southern California (United States)
Stephen B. Cronin, The Univ. of Southern California (United States)


Published in SPIE Proceedings Vol. 7608:
Quantum Sensing and Nanophotonic Devices VII
Manijeh Razeghi; Rengarajan Sudharsanan; Gail J. Brown, Editor(s)

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