Scalora, MichaelD’Aguanno, GiuseppeMattiucci, NadiaAkozbek, NesetBloemer, Mark J.Centini, MarcoSibilia, ConcitaBertolotti, Mario2020-05-292020-05-292005-12-05Michael Scalora et al., Pulse propagation, dispersion, and energy in magnetic materials, Phys. Rev. E, Vol. 72, Iss. 6 (2005), https://doi-org/10.1103/PhysRevE.72.066601https://doi.org/10.1103/PhysRevE.72.066601http://hdl.handle.net/11603/18787We discuss pulse propagation effects in generic, electrically and magnetically dispersive media that may display large material discontinuities, such as a surface boundary. Using the known basic constitutive relations between the fields, and an explicit Taylor expansion to describe the dielectric susceptibility and magnetic permeability, we derive expressions for energy density and energy dissipation rates, and equations of motion for the coupled electric and magnetic fields. We then solve the equations of motion in the presence of a single interface, and find that in addition to the now-established negative refraction process an energy exchange occurs between the electric and magnetic fields as the pulse traverses the boundary.8 pagesen-USThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.Public Domain Mark 1.0This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.Text