Consideration of dispersion and group velocity dispersion in the determination of velocities of electromagnetic propagation

Monish R. Chatterjee; Partha P. Banerjee

doi:10.1117/12.860210

7 September 2010 Consideration of dispersion and group velocity dispersion in the determination of velocities of electromagnetic propagation

Monish R. Chatterjee, Partha P. Banerjee

Author Affiliations +

Proceedings Volume 7797, Optics and Photonics for Information Processing IV; 779706 (2010) https://doi.org/10.1117/12.860210
Event: SPIE Optical Engineering + Applications, 2010, San Diego, California, United States

Abstract

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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Monish R. Chatterjee and Partha P. Banerjee "Consideration of dispersion and group velocity dispersion in the determination of velocities of electromagnetic propagation", Proc. SPIE 7797, Optics and Photonics for Information Processing IV, 779706 (7 September 2010); https://doi.org/10.1117/12.860210

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