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Optical Dispersion Models for Time-Domain Modeling of Metal-Dielectric Nanostructures

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3 Author(s)
Prokopeva, L.J. ; Inst. of Comput. Technol., Russian Acad. of Sci., Novosibirsk, Russia ; Borneman, J.D. ; Kildishev, A.V.

We discuss second-order complex Padé approximants which give a systematic approach to time-domain modeling of dispersive dielectric functions. These approximants, which also reduce to the classical Drude, Lorentz, Sellmeier, critical points and other models upon appropriate truncation, are used to compare frequency domain (FD) versus time-domain (TD) simulations of local optical responses and the transmission-reflection spectra for a plasmonic nanostructure. A comparison is also made using auxiliary differential equations (ADE), and second order recursive convolution (RC) formulations embedded in finite-difference, finite-volume, and finite-element time-domain solvers.

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Magnetics, IEEE Transactions on  (Volume:47 ,  Issue: 5 )