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

  • Author:

    M. Decker, R. Zhao, C.M. Soukoulis, S. Linden, and M. Wegener

  • Source: Opt. Lett. 35, 1593 (2010)
  • Date: 6.3.2010

  • 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° for 205 nm sample thickness are derived.
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