  A simple and effective single-shot pump-probe technique is reported for
studying the ultrafast dynamic processes in various materials. Using only two
commercial gratings, a large time window of ~ 95.58 ps is spatially encoded in
a single probe pulse, and single-shot time-resolved measurements are
implemented. This time window exceeds the maximum reported values for
single-shot pump-probe techniques using the echelon or angle beam encoding
strategy. The phase difference problem in the echelon encoding strategies is
also eliminated and a customized echelon is not needed in this technique. The
ultrafast dynamic processes of ZnSe and indolium squaraine at a wavelength of
650 nm were investigated using this technique.
