B-CALM: an open-source GPU-based 3D-FDTD with multi-pole dispersion for plasmonics

Pierre Wahl; Dany-Sebastien Ly-Gagnon; Christof Debaes; David A. B. Miller; Hugo Thienpont

doi:10.1117/12.922393

4 May 2012 B-CALM: an open-source GPU-based 3D-FDTD with multi-pole dispersion for plasmonics

Pierre Wahl, Dany-Sebastien Ly-Gagnon, Christof Debaes, David A. B. Miller, Hugo Thienpont

Proceedings Volume 8429, Optical Modelling and Design II; 842910 (2012) https://doi.org/10.1117/12.922393
Event: SPIE Photonics Europe, 2012, Brussels, Belgium

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.

Citation Download Citation

Pierre Wahl, Dany-Sebastien Ly-Gagnon, Christof Debaes, David A. B. Miller, and 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); https://doi.org/10.1117/12.922393

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