Asymmetric transmission of linearly polarized light at optical metamaterials.
Christoph Menzel,Christian Helgert,Carsten Rockstuhl,Ernst-Bernhard Kley,Andreas Tünnermann,Thomas Pertsch,Falk Lederer +6 more
TLDR
A three-dimensional chiral optical metamaterial is experimentally demonstrated that exhibits an asymmetric transmission for forwardly and backwardly propagating linearly polarized light.Abstract:
We experimentally demonstrate a three-dimensional chiral optical metamaterial that exhibits an asymmetric transmission for forwardly and backwardly propagating linearly polarized light. The observation of this novel effect requires a metamaterial composed of three-dimensional chiral meta-atoms without any rotational symmetry. Our analysis is supported by a systematic investigation of the transmission matrices for arbitrarily complex, generally lossy media that allows deriving a simple criterion for asymmetric transmission in an arbitrary polarization base. Contrary to physical intuition, in general the polarization eigenstates in such three-dimensional and low-symmetry metamaterials do not obey fixed relations and the associated transmission matrices cannot be symmetrized.read more
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Terahertz Metamaterials for Linear Polarization Conversion and Anomalous Refraction
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Three-dimensional chiral plasmonic oligomers.
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