  We report on optical experiments performed on individual GaAs nanowires and
the ma- nipulation of their temporal emission characteristics using a surface
acoustic wave. We find a pronounced, characteristic suppression of the emission
intensity for the surface acoustic wave propagation aligned with the axis of
the nanowire. Furthermore, we demonstrate that this quenching is dynamical as
it shows a pronounced modulation as the local phase of the surface acoustic
wave is tuned. These effects are strongly reduced for a SAW applied in the
direction perpendicular to the axis of the nanowire due to their inherent
one-dimensional geometry. We resolve a fully dynamic modulation of the nanowire
emission up to 678 MHz not limited by the physical properties of the nanowires.
