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Issue 22, 2006
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Polarization-dependent effects in surface-enhanced Raman scattering (SERS)

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Abstract

A few key examples of polarization effects in surface-enhanced Raman scattering (SERS) are highlighted and discussed. It is argued that the polarization of the local field, which is felt by an analyte molecule in a location of high electromagnetic field enhancement (hot-spot), can be very different from that of the incident exciting beam. The polarization dependence of the SERS signal is, therefore, mostly dictated by the coupling of the laser to the plasmons rather than by the symmetry of the Raman tensor of the analyte. This sets serious restrictions for the interpretation of both single-molecule SERS polarization studies and for the use of circularly polarized light in techniques like surface-enhanced Raman optical activity.

Graphical abstract: Polarization-dependent effects in surface-enhanced Raman scattering (SERS)

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Publication details

The article was received on 13 Mar 2006, accepted on 27 Apr 2006 and first published on 10 May 2006


Article type: Paper
DOI: 10.1039/B603725A
Citation: Phys. Chem. Chem. Phys., 2006,8, 2624-2628
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    Polarization-dependent effects in surface-enhanced Raman scattering (SERS)

    P. G. Etchegoin, C. Galloway and E. C. Le Ru, Phys. Chem. Chem. Phys., 2006, 8, 2624
    DOI: 10.1039/B603725A

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