Fig. 4: Time-resolved infrared reflectivity measurements.
From: Strong modulation of carrier effective mass in WTe2 via coherent lattice manipulation

a Experimental data; fit results for b maximum ΔR/R variation (left axis, green) and its time position with respect to the one at the lowest fluence (right axis, black), c initial amplitude for the shear mode (left axis, red) and for the second-lowest A1 mode (right axis, blue), d shear mode (left axis, red) and second-lowest A1 mode frequencies (right axis, blue), e second-lowest A1 mode time-decay constant. The error bars represent one standard deviation uncertainty.