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Sign of the refractive index in a gain medium with negative permittivity and permeability

2006

Article

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We show how the sign of the refractive index in any medium may be derived using a rigorous analysis based on Einstein causality. In particular, we consider left-handed materials, i.e., media that have negative permittivities and permeabilities at the frequency of interest. We find that the consideration of gain in such media can give rise to a positive refractive index. (c) 2006 Optical Society of America.

Author(s): Chen, YF and Fischer, Peer and Wise, FW
Journal: JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
Volume: 23
Number (issue): 1
Pages: 45-50
Year: 2006

Department(s): Micro, Nano, and Molecular Systems
Bibtex Type: Article (article)

DOI: 10.1364/JOSAB.23.000045

BibTex

@article{ISI:000234528900006,
  title = {Sign of the refractive index in a gain medium with negative permittivity and permeability},
  author = {Chen, YF and Fischer, Peer and Wise, FW},
  journal = {JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS},
  volume = {23},
  number = {1},
  pages = {45-50},
  year = {2006}
}