Time-derivative lorentz materials and their utilization as electromagnetic absorbers

Richard W. Ziolkowski

Research output: Contribution to journalArticlepeer-review

31 Scopus citations


A time-derivative Lorentz material model is introduced for the polarization and magnetization fields in a complex medium illuminated by an ultrafast pulsed beam. This model represents a straightforward generalization of the standard Lorentz material model to include the time derivatives of the fields as driving mechanisms. The Green function for this material is derived and used to demonstrate that it is causal and passive. An electromagnetic absorber is constructed with this time-derivative Lorentz material, and simulations are given which illustrate its effectiveness under illumination by obliquely incident, ultrafast, pulsed Gaussian beams having narrow and broad waists.

Original languageEnglish (US)
Pages (from-to)7696-7703
Number of pages8
JournalPhysical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
Issue number6
StatePublished - 1997

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Condensed Matter Physics


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