title: Mechanism of near-field Raman enhancement in one-dimensional systems.
abstract: We develop a theory of near-field Raman enhancement in one-dimensional systems, and report supporting experimental results for carbon nanotubes. The enhancement is established by a laser-irradiated nanoplasmonic structure acting as an optical antenna. The near-field Raman intensity is inversely proportional to the 10th power of the separation between the enhancing structure and the one-dimensional system. Experimental data obtained from single-wall carbon nanotubes indicate that the Raman enhancement process is not significantly influenced by the specific phonon eigenvector, and is mainly defined by the properties of the nanoplasmonic structure.
authors.affiliation: The Institute of Optics, University of Rochester, Rochester, New York 14627, USA.
authors.forename: L G
authors.initials: LG
authors.lastname: Cançado
authors.forename: A
authors.initials: A
authors.lastname: Jorio
authors.forename: A
authors.initials: A
authors.lastname: Ismach
authors.forename: E
authors.initials: E
authors.lastname: Joselevich
authors.forename: A
authors.initials: A
authors.lastname: Hartschuh
authors.forename: L
authors.initials: L
authors.lastname: Novotny