Chiral Ag nanostructure arrays as optical antennas
Citation:
Gough, J.J., McCloskey, D., Caridad, J.M., Krstic, V., Muller, M., Gaponik, N., Bradley, A.L., Chiral Ag nanostructure arrays as optical antennas, 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS), Oxford, UK, September, 2015Abstract:
Directional and circularly polarised emission from quantum dots coupled with chiral Ag nanostructures has been demonstrated. Semiconductor quantum dots were deposited onto the chiral structures using the Layer-by-Layer deposition technique. Time-resolved photoluminescence measurements demonstrated a lifetime quenching efficiency of 82%, confirming the strong interaction between the emitters and the antennas. Angle- and polarisation-resolved photoluminescence measurements revealed that the chiral nanostructures influence the far-field emission properties of the quantum emitters through dipole coupling. The far-field emission from the quantum dots coupled to the chiral nanostructures displays directionality in the emission pattern and more than 17% circular polarisation, following the handedness of the chiral structure.
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http://people.tcd.ie/bradlel
Author: Bradley, Louise
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9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)Type of material:
Conference PaperCollections
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Full text availableKeywords:
Indium Tin Oxide (ITO), Substrates, Optical polarization, Solids, Optical device fabrication, Antenna arrays, Quantum dotsDOI:
http://dx.doi.org/10.1109/MetaMaterials.2015.7342532Metadata
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