6533b82efe1ef96bd129293f

RESEARCH PRODUCT

Planar metamaterial analogue of electromagnetically induced transparency for plasmonic sensing.

Ulrike EigenthalerHarald GiessenThomas WeissNa LiuCarsten SönnichsenMartin MeschMichael HirscherLutz Langguth

subject

Optics and PhotonicsMaterials scienceElectromagnetically induced transparencySurface PropertiesPhysics::OpticsBioengineeringlaw.inventionPlanarOpticsElectromagnetic FieldslawFigure of meritNanotechnologyGeneral Materials ScienceDipole antennaParticle SizePlasmonbusiness.industryMechanical EngineeringMetamaterialResonanceMembranes ArtificialGeneral ChemistryEquipment DesignCondensed Matter PhysicsRefractometryOptoelectronicsGoldAntenna (radio)business

description

We experimentally demonstrate a planar metamaterial analogue of electromagnetically induced transparency at optical frequencies. The structure consists of an optically bright dipole antenna and an optically dark quadrupole antenna, which are cut-out structures in a thin gold film. A pronounced coupling-induced reflectance peak is observed within a broad resonance spectrum. A metamaterial sensor based on these coupling effects is experimentally demonstrated and yields a sensitivity of 588 nm/RIU and a figure of merit of 3.8.

yearjournalcountryeditionlanguage
2009-12-19Nano letters
10.1021/nl902621dhttps://pubmed.ncbi.nlm.nih.gov/20017551