Beilstein J. Nanotechnol.2014,5, 2275–2292, doi:10.3762/bjnano.5.237
. Both features are often naturally combined in vibrational nonlinear optical techniques. In this frame, this paper reviews the main achievements of the two most common vibrational nonlinearopticalspectroscopies, namely surface-enhanced sum-frequency generation (SE-SFG) and surface-enhanced coherent
(CARS); nonlinearopticalspectroscopies; sum-frequency generation (SFG); surfaces plasmon resonance; vibrational spectroscopies; Review
1. Introduction – linear vibrational spectroscopies
A widespread approach in molecular analysis relies on the vibrational fingerprint of matter to obtain an intrinsic
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Figure 1:
Photon diagrams for different linear and nonlinear optical processes. Solid horizontal lines are re...