Electromagnetic field energy in dispersive materials
JOSA B, Vol. 27, Issue 6, pp. 1215-1220 (2010)
http://dx.doi.org/10.1364/JOSAB.27.001215
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Abstract
A general expression for the electromagnetic energy density in a lossy dispersive medium, applicable for a field having a narrow temporal frequency bandwidth, is derived and compared with exact results for an example dielectric constant. Consequently, the possibility of negative time-averaged stored field energy is shown to have physical meaning. This observation is of interest in the study of dispersive metamaterials, such as those which can exhibit a negative refractive index.
© 2010 Optical Society of America
OCIS Codes
(260.2030) Physical optics : Dispersion
(260.2110) Physical optics : Electromagnetic optics
(160.3918) Materials : Metamaterials
ToC Category:
Physical Optics
History
Original Manuscript: February 18, 2010
Manuscript Accepted: March 4, 2010
Published: May 12, 2010
Citation
Kevin J. Webb and Shivanand, "Electromagnetic field energy in dispersive materials," J. Opt. Soc. Am. B 27, 1215-1220 (2010)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-27-6-1215
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