Phys. Rev. Lett. 103, 186101 (2009) [4 pages]Mechanism of Near-Field Raman Enhancement in One-Dimensional SystemsReceived 24 June 2009; revised 7 October 2009; published 26 October 2009 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. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.103.186101
DOI:
10.1103/PhysRevLett.103.186101
PACS:
68.37.Uv, 78.30.Na
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