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On the SERS depolarization ratio

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Foti A., D’Andrea C., Messina E., Irrera A., Maragò O. M., Fazio B., Gucciardi P. G.

Nanospectroscopy

2014

vol. 1

issue 1

The Raman depolarization ratio is a quantity that can be easily measured experimentally and offers unique information on the Raman polarizability tensor of molecular vibrations. In Surface Enhanced Raman Scattering (SERS), molecules are near-field coupled with optical nanoantennas and their scattering properties are strongly affected by the radiation patterns of the nanoantenna. The polarization of the SERS photons is consequently modified, affecting, in a non trivial way, the measured value of the SERS depolarization ratio. In this article we elaborate a model that describes how the SERS depolarization ratio is influenced by the nanoantenna re-radiation properties, suggesting how to retrieve information on the Raman polarizability from SERS experiments.

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1 Nanospectroscopy

1 2015

1 D’Andrea C.

1 Fazio B.

1 Foti A.

1 Gucciardi P. G.

1 Irrera A.

1 Maragò O. M.

1 Messina E.

Search results

On the SERS depolarization ratio