Different longitudinal optical - transverse optical mode amplification in tip enhanced Raman spectroscopy of GaAs(001) (Articolo in rivista)

Type
Label
  • Different longitudinal optical - transverse optical mode amplification in tip enhanced Raman spectroscopy of GaAs(001) (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Alternative label
  • Gucciardi P. G.; Valmalette J.-C. (2010)
    Different longitudinal optical - transverse optical mode amplification in tip enhanced Raman spectroscopy of GaAs(001)
    in Applied physics letters
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Gucciardi P. G.; Valmalette J.-C. (literal)
Pagina inizio
  • 263104 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 97 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR Ist Proc Chim Fis, I-98158 Messina, Italy Univ Sud Toulon Var, F-83957 La Garde, France CNRS, IM2NP, UMR 6242, F-83957 La Garde, France (literal)
Titolo
  • Different longitudinal optical - transverse optical mode amplification in tip enhanced Raman spectroscopy of GaAs(001) (literal)
Abstract
  • We report on tip enhanced Raman spectroscopy of GaAs(100) crystals taking advantage of the fields polarization to maximize the near-field contrast. Excitation parallel to either the [100] or the [110] crystallographic axis provide minimum far-field background provided that cross-or parallel-component of the Raman field are detected. Experiments highlight a tip-induced selective enhancement of the one-phonon longitudinal optical mode with respect to the transverse optical mode. We interpret this effect in terms of depolarization of the excitation field and beam deflection which breaks the polarization-based selection rules of the Raman scattering. (literal)
Prodotto di
Autore CNR
Insieme di parole chiave

Incoming links:


Prodotto
Autore CNR di
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
Insieme di parole chiave di
data.CNR.it