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Title: Deep-subwavelength imaging of both electric and magnetic localized optical fields by plasmonic campanile nanoantenna

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep09606· OSTI ID:1256051
 [1];  [1];  [2];  [3];  [4];  [5];  [5];  [6];  [6];  [2];  [2];  [2];  [1];  [1]
  1. European Laboratory for Non-linear Spectroscopy, Sesto Fiorentino (Italy); Univ. of Florence (Italy)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. Univ. of Trento (Italy)
  4. Institute of Photonics and Nanotechnology (CNR) Roma (Italy)
  5. Univ. of Leeds, Leeds (United Kingdom)
  6. Eindhoven Univ. of Technology (Netherlands). COBRA Research Institute

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. In conclusion, 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.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02- 05CH11231
OSTI ID:
1256051
Journal Information:
Scientific Reports, Vol. 5; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 14 works
Citation information provided by
Web of Science

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Cited By (4)

Near-field probing the magnetic field vector of visible light with a silicon nanoparticle probe and nanopolarimetry journal January 2018
A polarizing situation: Taking an in-plane perspective for next-generation near-field studies journal January 2016
Light scattering of rectangular slot antennas: parallel magnetic vector vs perpendicular electric vector journal January 2016
A full vectorial mapping of nanophotonic light fields preprint January 2018