Deep-subwavelength imaging of both electric and magnetic localized optical fields by plasmonic campanile nanoantenna
Year: 2015
Authors: Caselli N., La China F., Bao W., Riboli F., Gerardino A., Li L.H., Linfield E.H., Pagliano F., Fiore A., Schuck PJ., Cabrini S., Weber-Bargioni A., Gurioli M., Intonti F.
Autors Affiliation: European Lab Nonlinear Spect, I-50019 Sesto Fiorentino, FI, Italy; Univ Florence, Dept Phys, I-50019 Sesto Fiorentino, FI, Italy; Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Mol Foundry, Berkeley, CA 94720 USA; Univ Trento, Dept Phys, I-38123 Povo, TN, Italy; CNR, Inst Photon & Nanotechnol, I-00156 Rome, Italy; Univ Leeds, Sch Elect & Elect Engn, Leeds LS2 9JT, W Yorkshire, England; Eindhoven Univ Technol, COBRA Res Inst, NL-5600 MB Eindhoven, Netherlands.
Abstract: Tailoring the electromagnetic field at the nanoscale has led to artificial materials exhibiting fascinating optical properties unavailable in naturally occurring substances. Besides having fundamental implications for classical and quantum optics, nanoscale metamaterials provide a platform for developing disruptive novel technologies, in which a combination of both the electric and magnetic radiation field components at optical frequencies is relevant to engineer the light-matter interaction. Thus, an experimental investigation of the spatial distribution of the photonic states at the nanoscale for both field components is of crucial importance. Here we experimentally demonstrate a concomitant deep-subwavelength near-field imaging of the electric and magnetic intensities of the optical modes localized in a photonic crystal nanocavity. We take advantage of the campanile tip’’, a plasmonic near-field probe that efficiently combines broadband field enhancement with strong far-field to near-field coupling. By exploiting the electric and magnetic polarizability components of the campanile tip along with the perturbation imaging method, we are able to map in a single measurement both the electric and magnetic localized near-field distributions.
Journal/Review: SCIENTIFIC REPORTS
Volume: 5 Pages from: 9606-1 to: 9606-6
More Information: N.C., F.L.C., M.G. and F.I. declare to be supported by the FET project FP7 618025 CARTOON and the project LASERLAB-EUROPE (284464, EC FP7). F.P. and A.F. declare to be supported by the project LASERLAB-EUROPE (284464, EC FP7) and that their work is part of the research program of the Foundation for Fundamental Research on Matter (FOM), which is financially supported by the Netherlands Organization for Scientific Research (NWO). Work at the Molecular Foundry was supported by the U.S. Department of Energy (DOE), Office of Basic Energy Sciences, Scientific User Facilities Division, under contract no. DE-AC02-05CH11231 and user project #2029. The campanile fabrication was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Scientific User Facilities Division (NSRCs) Early Career Award.KeyWords: Circuit Elements; Light; Metamaterial; AntennaDOI: 10.1038/srep09606Citations: 14data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-11-17References taken from IsiWeb of Knowledge: (subscribers only)