Beilstein J. Nanotechnol.2012,3, 674–683, doi:10.3762/bjnano.3.77
laser modes; localisedsurfaceplasmons; near field; surface-enhanced Raman scattering; Introduction
The interaction of light and matter is especially intriguing in those cases where the size of the matter particle is comparable to or smaller than the wavelength of the light. When illuminating metallic
nano-particles with light of a matching frequency, particle plasmons (also called plasmon polaritons or localisedsurfaceplasmons, LSP) can be created and investigated [1]. These quantised collective oscillations of the electrons in the metal have been at the centre of a relatively recent field of
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Figure 1:
Focusing higher order laser modes with a parabolic mirror. (a) A sketch illustrating how a radial m...