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

Journal Contribution - Journal Article Conference Contribution

Numerical calculations with finite-difference 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 with multi-pole dispersion models. Our modified architecture shows a reduction in computing times for multi-pole dispersion models. We benchmark B-CALM by computing the absorption efficiency of a metallic nanosphere on a broad spectral range with a six-poles Drude-Lorentz model and compare it with Mie theory.
Journal: Opt. Quantum Electron.
ISSN: 0306-8919
Volume: 44
Pages: 285-290
Publication year:2012
Keywords:FDTD; GPU; Dispersive; Multi-pole; Plasmonic
  • Scopus Id: 84862780152