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2009-04-09
Electromagnetic Wave Propagation in Nonlocal Media: Negative Group Velocity and Beyond
By
Progress In Electromagnetics Research B, Vol. 14, 149-174, 2009
Abstract
We study theoretically the propagation of electromagnetic waves in an infinite and homogenous medium with both temporal and spatial dispersion included. We derive a partial differential equation connecting temporal and spatial dispersion to achieve negative group velocity. Exact solutions of the equation are found and shown to lead to the possibility of exciting constant negative group velocity waves. We then investigate the effect of spatial dispersion on the power flow and derive the first-, second-, and third-order corrections of power flow due to the nonlocality in the medium. This derivation suggests a path beyond the group velocity concept.
Citation
Said Mikki, and Ahmed Kishk, "Electromagnetic Wave Propagation in Nonlocal Media: Negative Group Velocity and Beyond," Progress In Electromagnetics Research B, Vol. 14, 149-174, 2009.
doi:10.2528/PIERB09031911
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