Abstract
The real part of the refractive index n(omega) of a nearly transparent and passive medium is usually taken to have only positive values. Through an analysis of a current source radiating into a 1D "left-handed" material (LHM)-where the permittivity and permeability are simultaneously less than zero-we determine the analytic structure of n(omega), demonstrating frequency regions where the sign of Re[n(omega)] must, in fact, be negative. The regime of negative index, made relevant by a recent demonstration of an effective LHM, leads to unusual electromagnetic wave propagation and merits further exploration.
Keywords
OmegaRefractive indexPhysicsNegative refractionPermittivitySign (mathematics)Negative index metamaterialsOpticsLeft handedCondensed matter physicsQuantum mechanicsDielectricMathematical analysisMathematics
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Publication Info
- Year
- 2000
- Type
- article
- Volume
- 85
- Issue
- 14
- Pages
- 2933-2936
- Citations
- 1165
- Access
- Closed
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Cite This
David R. Smith,
N. Kroll
(2000).
Negative Refractive Index in Left-Handed Materials.
Physical Review Letters
, 85
(14)
, 2933-2936.
https://doi.org/10.1103/physrevlett.85.2933
Identifiers
- DOI
- 10.1103/physrevlett.85.2933