Comment on: "Slow Light" in Stimulated Brillouin Scattering: on the influence of the spectral width of pump radiation on the group index.
In a recent article [Opt. Express 17, 17317 (2009)] Kovalev et al. claimed that SBS-induced group index is always negligibly small, regardless of the intensity and bandwidth of pump radiation. In this comment, we show that their conclusions are not valid in any practical conditions in which SBS-based slow light experiments are carried out.
Minardo
Aldo
A
Department of Information Engineering, Second University of Naples - Via Roma 29 - Aversa - Italy. aldo.minardo@unina2.it
Bernini
Romeo
R
Zeni
Luigi
L
D003198:Computer Simulation; D007834:Lasers; D008027:Light; D008962:Models, Theoretical; D012031:Refractometry / Q000379:methods*; D012542:Scattering, Radiation