and pulse schemes, we observe the ground state depletion of peaks at 1160 cm -1 , 1180 cm -1 , and 1375 cm -1 . Previous density functional theory (DFT) calculations assign the 1160 cm -1 and 1180 cm -1 ground state modes to in-plane hydrogen wags and the 1375 cm -1 ground state mode to a carbon-carbon stretch. Ground state depletion signals in FSRS indicate the magnitude of the population in all excited states, including singlet and triplet excitons, and can be a useful metric in tracking the flow of excitons. Additionally, the magnitude of ground state depletion is typically larger than that of any individual excited state, particularly when those states of off-resonant with our Raman pump wavelength. As such, we quantify the magnitude of ground state depletion to investigate the impact of mode-selective phonon excitation on transport. For our analysis, we fit the 1375 cm -1 depletion peak to a Gaussian function. Fit constraints are found in SI Section 6, along with a summary of data we discarded. We normalized the depletion amplitude by the ground state amplitude for each scan and the photoexcitation power at each actinic scan position. To quantify differences in excited state population relative to the single pulse, we average the ground state depletion across multiple time delays. Once averaged, we scale each double pulse scheme for the bandwidth of the actinic laser pulse to account for the efficiency of how each phonon mode is amplified (Fig. ). Bandwidth scaling factors are given in Table . Figure shows the averaged depletion magnitude for all pulse schemes at each photoexcitation location between 5 and 100 ps time delays.