Spontaneous and Stimulated Raman Scattering near Metal Nanostructures in the Ultrafast, High-Intensity Regime
Journal of the Optical Society of America B
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 circumstances full accounting of the dynamics of the Bloch vector is required.
Copyright © 2013, Optical Society of America
Optical Society of America
Scalora, Michael; Vincenti, Maria Antonietta; de Ceglia, Domenico; Grande, Marco; and Haus, Joseph W., "Spontaneous and Stimulated Raman Scattering near Metal Nanostructures in the Ultrafast, High-Intensity Regime" (2013). Electrical and Computer Engineering Faculty Publications. 279.