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

被引：85

作者：

Etchegoin, P. G. ^{[1
]}

Galloway, C. ^{[1
]}

Le Ru, E. C. ^{[1
]}

机构：

[1] Victoria Univ Wellington, Sch Chem & Phys Sci, MacDiarmid Inst Adv Mat & Nanotechnol, Wellington, New Zealand

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2006年 / 8卷 / 22期

关键词：

D O I：

10.1039/b603725a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：2624 / 2628

页数：5

共 22 条

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