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arXiv 1202.4309physics.opticsphysics.chem-ph
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大波矢表面等离子体激元介导的增强拉曼散射

Enhanced Raman scattering mediated by large wave-vector surface plasmon polaritons

Tomas Lopez-Rios

摘要:

研究了由波矢远大于光的表面等离子体激元介导的表面增强拉曼散射。这些极化激元的激发和有效的拉曼散射,由于低群速度和电场本地化的表面的情况下,两个附近的表面进行了讨论。拉曼散射不仅取决于分子所看到的电场的强度,而且还取决于表面等离子体激元态密度。

英文摘要:

Surface enhanced Raman scattering mediated by surface plasmons polaritons with wave vector much larger than those of light is considered. The excitation of these polaritons and their efficient Raman scattering due to low group velocity and electric field localization at the surface is discussed for the case of two nearby surfaces. The Raman scattering depends not only on the intensity of the electric fields seen by the molecules but also on the surface plasmon density of states.

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