title: Tomography of particle plasmon fields from electron energy loss spectroscopy.
abstract: We theoretically investigate electron energy loss spectroscopy (EELS) of metallic nanoparticles in the optical frequency domain. Using a quasistatic approximation scheme together with a plasmon eigenmode expansion, we show that EELS can be rephrased in terms of a tomography problem. For selected single and coupled nanoparticles we extract the three-dimensional plasmon fields from a collection of rotated EELS maps. Our results pave the way for a fully three-dimensional plasmon-field tomography and establish EELS as a quantitative measurement device for plasmonics.
authors.affiliation: Institut für Physik, Karl-Franzens-Universität Graz, Graz, Austria.
authors.forename: Anton
authors.initials: A
authors.lastname: Hörl
authors.forename: Andreas
authors.initials: A
authors.lastname: Trügler
authors.forename: Ulrich
authors.initials: U
authors.lastname: Hohenester