  We have experimentally demonstrated a simplified method for performing
single-shot supercontinuum spectral interferometry (SSSI) that does not require
pre-characterization of the probe pulse. The method, originally proposed by D.
T. Vu, D. Jang, and K. Y. Kim, uses a genetic algorithm (GA) and as few as two
time-delayed pump-probe shots to retrieve the pump-induced phase shift on the
probe [Opt. Express 26, 20572 (2018)]. We show that the GA is able to
successfully retrieve the transient modulations on the probe, and that the
error in the retrieved modulation decreases dramatically with the number of
shots used. In addition, we propose and demonstrate a practical method that
allows SSSI to be done with a single pump-probe shot (again, without the need
for pre-characterization of the probe). This simplified method can prove to be
immensely useful when performing SSSI with a low-repetition-rate laser source.
