Journal
IEEE TRANSACTIONS ON MAGNETICS
Volume 47, Issue 5, Pages 1150-1153Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TMAG.2010.2091676
Keywords
Critical points; dispersive media; drude; FDTD methods; FETD; FVTD; Lorentz; Pade approximant; Sellmeier
Funding
- ARO MURI [56154-PH-MUR, 50342-PH-MUR]
- IIP SB RAS [113]
- RFFS [09-01-00352-a]
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We discuss second-order complex Pade 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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