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

M. Decker, R. Zhao, C. M. Soukoulis, S. Linden, M. Wegener
2010 Optics Letters  
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 at around 100-THz frequency and corresponding modeling are in good agreement. Rotation angles of about 30 degrees for 205nm
more » ... ees for 205nm sample thickness are derived.
doi:10.1364/ol.35.001593 pmid:20479819 fatcat:5nyembhhkzhgvgxrwrexuiikum