  We thoroughly analyze the response of the zero-temperature N=2 super
Yang-Mills theory to time-dependent electric field quenches via holography. We
specially focus on transient pulse-like configurations for the electric field,
characterized by some model parameters, such as the maximum value of the
electric field $E_0$ and the ramping time $\delta_t$ which determines the time
interval for switching the electric field on and off. We also compare some of
the results with those of tanh-like quenches. The term tanh-like quench is used
for a quench that rises from zero to a final finite value during a finite
amount of time. Our numerical solutions demonstrate that when the system is
subjected to pulse-like electric field quenches, the emerged electric current
as a response goes through three stages as time passes. After excitation and
rapidly-damping oscillatory stages, it experiences a long-lasting periodic
oscillatory region. In fact the effect of the electric pulse remains in the
system much longer than the duration of the presence of the electric field
itself. It is extremely interesting that, as confirmed by power spectrum
diagrams, these oscillations have a unique obvious frequency which is
independent of the details of the electric pulse function and its parameters.
Moreover, we observe a universal behavior in the adiabatic limit, when the
ramping time tends to infinity. In this limit, the early and late time dynamics
of the response electric current does not depend on the time dependence of the
electric field. In particular, we see that for both pulse-like and tanh-like
quenches, the maximum value at the first peak of the oscillations approaches
the static value of the current induced by the presence of a static electric
field $E_0$. However, the fast quench behavior differs extremely for different
kinds of quench functions.
