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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 16 — Aug. 15, 2009
  • pp: 2501–2503

Strong optical activity from twisted-cross photonic metamaterials

M. Decker, M. Ruther, C. E. Kriegler, J. Zhou, C. M. Soukoulis, S. Linden, and M. Wegener  »View Author Affiliations


Optics Letters, Vol. 34, Issue 16, pp. 2501-2503 (2009)
http://dx.doi.org/10.1364/OL.34.002501


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Abstract

Following a recent theoretical suggestion and microwave experiments, we fabricate photonic metamaterials composed of pairs of twisted gold crosses using two successive electron-beam-lithography steps and intermediate planarization via a spin-on dielectric. The resulting two effective resonances of the coupled system lie in the 1 2 μ m wavelength regime and exhibit pronounced circular dichroism, while the circular polarization conversion is very small. In between the two resonances, we find a fairly broad spectral regime with strong optical activity, i.e., with a pure rotation of incident linear polarization. The measured optical transmittance spectra agree well with theory.

© 2009 Optical Society of America

OCIS Codes
(160.1585) Materials : Chiral media
(160.3918) Materials : Metamaterials
(220.4241) Optical design and fabrication : Nanostructure fabrication

ToC Category:
Materials

History
Original Manuscript: May 26, 2009
Revised Manuscript: July 14, 2009
Manuscript Accepted: July 17, 2009
Published: August 13, 2009

Citation
M. Decker, M. Ruther, C. E. Kriegler, J. Zhou, C. M. Soukoulis, S. Linden, and M. Wegener, "Strong optical activity from twisted-cross photonic metamaterials," Opt. Lett. 34, 2501-2503 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-16-2501

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