Surface-enhanced hyper Raman scattering SEHRS

Since the HRS scattering cross section is so small, enhancement of the signal intensity is indispensable for a practical use of the HRS technique in the field of molecular science. As already mentioned, one of the methods for signal enhancement is to use plasmonic resonances of metal nanostructures [20, 21, 25]. This enhancement technique is called surface-enhanced hyper-Raman scattering (SEHRS) because it is similar to that of surface-enhanced Raman scattering (SERS). In SERS or SEHRS, both excitation absorption and scattered emission benefit from plasmonic field enhancement. Therefore, the plasmonic enhancement factor M is described as... 

Hulteen, J.C., Young, M.A., and Van Duyne, R.P. (2006) Surface-enhanced hyper-Raman scattering (SEHRS) on Ag film over nanosphere (EON) electrodes surface symmetry of centrosymmetric adsorbates. Langmuir, 22, 10354-10364. 

Vibrational hyper-Raman scattering [40-43]. Another nonlinear phenomenon observed for metal/molecule system is the surface-enhanced hyper-Raman scattering (SEHRS), consisting in the emission from a sample irradiated with iight at a frequency radiation with frequency 2 > com, where com is a frequency t3q)ical of the molecule (such as a vibrational frequency). For h3q)er-Raman signals enhancement factors of 10 have been measured [41]. 

Surface-enhanced hyper-Raman scattering (SEHRS)... 

Surface Enhanced Hyper-Raman Spectroscopy (SEHRS) Hyper-Raman scattering is a nonlinear three-photon energy conversion process, that offers complementary informahon to Raman spectroscopy and has some advantages... 

SEHRS Surface enhanced hyper-Raman spectroscopy scattering... 

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