Comparison of gold and silver dispersion laws suitable for FDTD simulations

Thierry Laroche (1) , Alexandre Vial (2)

1 FEMTO-ST - Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174)
2 LNIO - Laboratoire de Nanotechnologie et d'Instrumentation Optique

We show that it is possible to increase the accuracy of gold and silver permittivity description by using the Drude–critical points model rather than the widely used Drude–Lorentz model. We also show the effect of this improvement on the extinction efficiency and near-field intensity precision.

Domaines: Micro et nanotechnologies/Microélectronique

Thierry Laroche, Alexandre Vial. Comparison of gold and silver dispersion laws suitable for FDTD simulations. Applied Physics B - Laser and Optics, 2008, 93 (1), pp.139-143. ⟨10.1007/s00340-008-3202-4⟩. ⟨hal-02298395⟩