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Opt Lett. 2010 May 15;35(10):1593-5. doi: 10.1364/OL.35.001593.

Twisted split-ring-resonator photonic metamaterial with huge optical activity.

Author information

1
Institut für Angewandte Physik and DFG-Center for Functional Nanostructures (CFN), Karlsruhe Institute ofTechnology (KIT), D-76128 Karlsruhe, Germany. manuel.decker@physik.uni-karlsruhe.de

Abstract

Coupled split-ring-resonator metamaterials have previously been shown to exhibit large coupling effects, which are a prerequisite for obtaining large effective optical activity. By a suitable lateral arrangement of these building blocks, we completely eliminate linear birefringence and obtain pure optical activity and connected circular optical dichroism. Experiments around a 100 THz frequency and corresponding modeling are in good agreement. Rotation angles of about 30 degrees for 205 nm sample thickness are derived.

PMID:
20479819
DOI:
10.1364/OL.35.001593

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