4 May 2012 B-CALM: an open-source GPU-based 3D-FDTD with multi-pole dispersion for plasmonics
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Abstract
Numerical calculations with nite-dierence time-domain (FDTD) on metallic nanostructures in a broad optical spectrum require an accurate approximation of the permittivity of dispersive materials. In this paper, we present the algorithms behind B-CALM (Belgium-California Light Machine), an open-source 3D-FDTD solver operating on Graphical Processing Units (GPUs) with multi-pole dispersion models. Our modied architecture shows a reduction in computing times for multi-pole dispersion models. We benchmark B-CALM by computing the absorption eciency of a metallic nanosphere on a broad spectral range with a six-poles Drude-Lorentz model and compare it with Mie theory.
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Pierre Wahl, Pierre Wahl, Dany-Sebastien Ly-Gagnon, Dany-Sebastien Ly-Gagnon, Christof Debaes, Christof Debaes, David A. B. Miller, David A. B. Miller, Hugo Thienpont, Hugo Thienpont, } "B-CALM: an open-source GPU-based 3D-FDTD with multi-pole dispersion for plasmonics", Proc. SPIE 8429, Optical Modelling and Design II, 842910 (4 May 2012); doi: 10.1117/12.922393; https://doi.org/10.1117/12.922393
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