Journal
PHYSICAL REVIEW B
Volume 79, Issue 12, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.79.121104
Keywords
circular dichroism; metamaterials; optical rotation; refractive index
Funding
- Department of Energy (Basic Energy Sciences) [DE-AC02-07CH11358]
- Department of Navy, Office of the Naval Research [N00014-07-1-0359]
- European Community FET project PHOME [213390]
- USAFOSR [FA 9550-06-1-0337]
- W. C. Wong Education Foundation, Hong Kong
- National Basic Research Program (973) of China [2004CB719805]
- National Natural Science Foundation of China [60777037]
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We demonstrate experimentally and numerically that metamaterials based on bilayer cross wires give giant optical activity, circular dichroism, and negative refractive index. The presented chiral design offers a much simpler geometry and more efficient way to realize negative refractive index at any frequency. We also developed a retrieval procedure for chiral materials which works successfully for circularly polarized waves.
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