Selection of Raman or Fluorescence Contributions in Chromophores Spectra Near the Surface with Plasmon Properties

Abstract
The observed effect of Raman and fluorescence contribution separation under resonance excitation of chromophores, deposited directly on the surface of plasmonic films or plasmonic crystals is discussed in the frame of influence of nanoparticles sizes and spectral detuning between the frequency of 0-0 transfer of chromophores and resonance excitation of localized plasmons. The contribution of chromophores Raman scattering and fluorescence in the first adsorption layer is discussed in the frame of a size-spectral factor.

Keywords
Raman scattering, surface-enhanced Raman scattering, fluorescence, chromophore, near-field, dressed photon
Acknowledgements
This work was realized with the financial support of the Ministry of Education of the Republic of Belarus in the frame of the state programs “Convergence”, “Electronics and Photonics”, “Physical Materials Science, New Materials and Technologies”. Samples of plasmon crystals and their AFM images were kindly provided by S. Gaponenko. The atomic force microscope Nanotechnology P4-SPM AFM/STM was used to analyze the size of particles on the surface of plasmon films and was kindly provided by I. F. Sveklo
УДК 535.016

Selection of Raman or Fluorescence Contributions in Chromophores Spectra Near the Surface with Plasmon Properties