Spontaneous and stimulated Raman scattering near metal nanostructures in the ultrafast, high-intensity regime

  title={Spontaneous and stimulated Raman scattering near metal nanostructures in the ultrafast, high-intensity regime},
  author={Michael Scalora and Maria Antonietta Vincenti and Domenico de Ceglia and Marco Grande and Joseph W. Haus},
  journal={Journal of The Optical Society of America B-optical Physics},
  • M. ScaloraM. Vincenti J. Haus
  • Published 2 May 2013
  • Chemistry, Physics
  • Journal of The Optical Society of America B-optical Physics
The inclusion of atomic inversion in Raman scattering can significantly alter field dynamics in plasmonic settings. Our calculations show that large local fields and femtosecond pulses combine to yield (i) population inversion within hot spots, (ii) gain saturation, and (iii) conversion efficiencies characterized by a switch-like transition to the stimulated regime that spans 12 orders of magnitude. While in Raman scattering atomic inversion is usually neglected, we demonstrate that in some… 

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