The negative index of refraction demystified

Details The negative index of refraction demystified The negative index of refraction demystified

2002-04-23

arxiv.org/abs/physics/0204067v1

European Journal of Physics, Vol. 23, no. 3, pp. 353-359 (2002)

Physics

Classical Physics

5 pages, 4 figures

Scientific paper

10.1088/0143-0807/23/3/314

We study electromagnetic wave propagation in mediums in which the effective relative permittivity and the effective relative permeability are allowed to take any value in the upper half of the complex plane. A general condition is derived for the phase velocity to be oppositely directed to the power flow. That extends the recently studied case of propagation in mediums for which the relative permittivity and relative permeability are both simultaneously negative, to include dissipation as well. An illustrative case study demonstrates that in general the spectrum divides into five distinct regions.

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