%0 Journal Article %A Arrieta Yáñez, Francisco %A Melle Hernández, Sonia %A Gómez Calderón, Óscar %A Antón Revilla, Miguel Ángel %A Carreño Sánchez, Fernando %T Phase tunability of group velocity by modulated-pump-forced coherent population oscillations %D 2009 %@ 1050-2947 %U https://hdl.handle.net/20.500.14352/42813 %X We propose a technique to obtain slow and fast light propagations based on coherent population oscillations forced by a modulated pump. This mechanism produces an enhancement of 1 order of magnitude of the delay or advancement of light signals. The relative phase between the pumps to the signal fields is used as a knob for changing light propagation from ultraslow group velocities to negative group velocities. The experimental realization of the phenomenon was carried out in an erbium-doped fiber amplifier at room temperature. %~