Possible effects of redistributed photon density of states on Raman scattering enhancement in mesoscopic structures

Sergey V. Gaponenko

doi:10.1117/12.468996

31 May 2002 Possible effects of redistributed photon density of states on Raman scattering enhancement in mesoscopic structures

Sergey V. Gaponenko

Author Affiliations +

Proceedings Volume 4705, Saratov Fall Meeting 2001: Coherent Optics of Ordered and Random Media II; (2002) https://doi.org/10.1117/12.468996
Event: Saratov Fall Meeting 2001, 2001, Saratov, Russian Federation

Abstract

Modification of photon density of states (DOS) is considered as an essential factor of modified Raman scattering in mesoscopic media with complicate spatial dependence of dielectric function on a scale of incident/scattered photon wavelengths. Possible contribution of redistributed photon DOS over frequency spectrum in mesoscopic metal-dielectric structures to surface enhancement of Raman scattering (SERS) by adsorbed molecules is outlined. Considerable growth of DOS for a certain mode increase spontaneous scattering rate to this mode which in turn promotes stimulated Raman scattering to the same mode. Therefore total effect of DOS on scattering rate can be higher than DOS increase in a given mesoscopic medium versus vacuum.

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Sergey V. Gaponenko "Possible effects of redistributed photon density of states on Raman scattering enhancement in mesoscopic structures", Proc. SPIE 4705, Saratov Fall Meeting 2001: Coherent Optics of Ordered and Random Media II, (31 May 2002); https://doi.org/10.1117/12.468996

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