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Optica Publishing Group
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 2001),
  • paper JTuC7

Group Velocity, Energy Velocity, and Superluminal Propagation In Finite Photonic Band Gap Structures

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Abstract

The concept of group velocity is critical when applied to an absorbing (or gain), homogeneous dielectric material because Vg may be greater than c, and it can even be negative in some circumstances. These topics were discussed at length in the seminal book by Brillouin.1

© 2001 Optical Society of America

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