Near-Complete Photon Spin Selectivity in a Metasurface of Anisotropic Plasmonic Antennas

Ogier, Robin,1987Chalmers tekniska högskola,Chalmers University of Technology (författare)

QC 20171215
Simple chiroptically active metamaterials are difficult to realize in practice but could pave the way for a range of important applications, such as sensitive optical biosensors, asymmetric catalysis, and novel polarization manipulation devices. We show that a metasurface based on a random arrangement of anisotropic but aligned gold nanoparticles can exhibit an almost perfect selectivity towards incident photon spin for evanescent excitation with visible to near-infrared light. The experimentally attained reflection contrast between left- and right-handed circularly polarized light peaks at similar to 90%, in excellent agreement with analytical theory. These results are important for the development of future photonic and plasmonic polarization-based technologies.

Fang, Yurui,1983Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)yurui (författare)
Käll, Mikael,1963Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)kall (författare)
Svedendahl, Mikael,1984Chalmers tekniska högskola,Chalmers University of Technology,Chalmers University of Technology, Sweden(Swepub:kth)u1tg08zi (författare)
Chalmers tekniska högskolaChalmers University of Technology, Sweden (creator_code:org_t)

Av författaren/redakt...: Ogier, Robin, 19 ...; Fang, Yurui, 198 ...; Käll, Mikael, 19 ...; Svedendahl, Mika ...

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