Proceedings of SPIE: Optics and Photonics for Information Processing IV
Electromagnetic (EM) propagation velocities play an important role in the determination of power and energy flow in materials and interfaces. It is well known that group and phase velocities need to be in opposition in order to achieve negative refractive index.
Recently, we have shown that considerable differences may exist in phase, group and signal/energy velocities for normal and anomalous dispersion, especially near dielectric resonances. This paper examines the phase and group velocities in the presence of normal and anomalous dispersion, and group velocity dispersion (GVD), which requires introduction of the second order coefficient in the permittivity and permeability models.
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Copyright © 2010, Society of Photo-optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited.
Society of Photo-optical Instrumentation Engineers
Place of Publication
San Diego, CA
Chatterjee, Monish Ranjan and Banerjee, Partha P., "Consideration of Dispersion and Group Velocity Dispersion in the Determination of Velocities of Electromagnetic Propagation" (2010). Electrical and Computer Engineering Faculty Publications. 343.
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