Temperature dependent anti-Stokes/Stokes ratios under Surface Enhanced Raman Scattering (SERS) conditions

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dc.creatorMaher, R. C.
dc.creatorCohen, L. F.
dc.creatorGallop, J. C.
dc.creatorRu, E. C. Le
dc.creatorEtchegoin, P. G.
dc.date2005-11-09
dc.date.accessioned2026-07-07T06:52:16Z
dc.date.available2026-07-07T06:52:16Z
dc.descriptionWe make systematic measurements of Raman anti-Stokes/Stokes (aS/S) ratios using two different laser excitations (514 and 633 nm) of rhodamine 6G (RH6G) on dried Ag colloids over a wide range of temperatures (100 to 350 K). We show that a temperature scan allows the separation of the contributions to the aS/S ratios from {\it resonance effects} and {\it heating/pumping}, thus decoupling the two main aspects of the problem. The temperature rise is found to be larger when employing the 633 nm laser. In addition, we find evidence for mode specific vibrational pumping at higher laser power densities. We analyze our results in the framework of ongoing discussion on laser heating/pumping under SERS conditions.
dc.description4 figures
dc.identifierhttps://arxiv.org/abs/physics/0511074
dc.identifierhttp://arxiv.org/abs/physics/0511074
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/105247
dc.subjectChemical Physics
dc.titleTemperature dependent anti-Stokes/Stokes ratios under Surface Enhanced Raman Scattering (SERS) conditions
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