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Drude dispersion in ADE FDTD revisited

Drude dispersion in ADE FDTD revisited

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© The Institution of Engineering and Technology
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Studies of double negative materials and of metals at optical frequencies have lead to renewed interest in modelling of materials characterised by Drude or multi-pole Lorentz-Drude frequency dispersion. The auxiliary differential equation method of treatment of Drude dispersion in the finite difference time domain method is revisited, and a substantially more accurate formulation is derived.

Inspec keywords: differential equations; metamaterials; dispersive media; finite difference time-domain analysis; computational electromagnetics; dispersion (wave)

Other keywords: Drude dispersion; Lorentz-Drude frequency dispersion; double negative materials; FDTD; finite difference time domain method; auxiliary differential equation method

Subjects: Other numerical methods; Electromagnetic waves: theory; Numerical approximation and analysis; Electromagnetic wave propagation; Differential equations (numerical analysis)

References

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    3. 3)
      • M. Okoniewski , M. Mrozowski , M.A. Stuchly . Simple treatment of multi-term dispersion in FDTD. IEEE Microw. Guide. Wave Lett. , 5 , 121 - 123
    4. 4)
      • D.M. Sullivan . (2000) Electromagnetic simulation using the FDTD method.
    5. 5)
    6. 6)
      • A. Taflove , S.C. Hagness . (2000) Computational electrodynamics: the finite-difference time-domain method.
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