title: Three-dimensional mapping of near-field interactions via single-photon tomography.
abstract: We demonstrate a near-field tomography method for investigating the coupling between a nanoscopic probe and a fluorescent sample. By correlating the arrival of single fluorescence photons with the lateral and vertical position of an oscillating tip, a complete three-dimensional analysis of the near-field coupling is achieved. The technique is used to reveal a number of interesting three-dimensional near-field features and to improve image contrast in tip-enhanced fluorescence microscopy.
authors.affiliation: Department of Physics and Astronomy, University of Utah, Salt Lake City, Utah 84112, USA.
authors.forename: Benjamin D
authors.initials: BD
authors.lastname: Mangum
authors.forename: Eyal
authors.initials: E
authors.lastname: Shafran
authors.forename: Chun
authors.initials: C
authors.lastname: Mu
authors.forename: Jordan M
authors.initials: JM
authors.lastname: Gerton