Sign of the refractive index in a gain medium with negative permittivity and permeability
2006
Article
pf
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}, doi = {10.1364/JOSAB.23.000045} } |