Iteratively optimized nonperiodic plasmon resonant nanostructures

Prathamesh Pavaskar; Stephen B. Cronin

doi:10.1117/12.843598

22 January 2010 Iteratively optimized nonperiodic plasmon resonant nanostructures

Prathamesh Pavaskar, Stephen B. Cronin

Proceedings Volume 7608, Quantum Sensing and Nanophotonic Devices VII; 760818 (2010) https://doi.org/10.1117/12.843598
Event: SPIE OPTO, 2010, San Francisco, California, United States

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.

Citation Download Citation

Prathamesh Pavaskar and Stephen B. Cronin "Iteratively optimized nonperiodic plasmon resonant nanostructures", Proc. SPIE 7608, Quantum Sensing and Nanophotonic Devices VII, 760818 (22 January 2010); https://doi.org/10.1117/12.843598

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