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Near-Complete Photon Spin Selectivity in a Metasurface of Anisotropic Plasmonic Antennas
Chalmers University of Technology, Sweden.ORCID iD: 0000-0002-4437-6291
2015 (English)In: Physical Review X, ISSN 2160-3308, E-ISSN 2160-3308, Vol. 5, no 4, article id 041019Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
American Physical Society, 2015. Vol. 5, no 4, article id 041019
National Category
Nano Technology Other Physics Topics Atom and Molecular Physics and Optics
Research subject
Physics
Identifiers
URN: urn:nbn:se:kth:diva-197586DOI: 10.1103/PhysRevX.5.041019ISI: 000364023000002Scopus ID: 2-s2.0-84950975920OAI: oai:DiVA.org:kth-197586DiVA, id: diva2:1165964
Funder
Knut and Alice Wallenberg FoundationSwedish Foundation for Strategic Research
Note

QC 20171215

Available from: 2017-12-14 Created: 2017-12-14 Last updated: 2017-12-15Bibliographically approved

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