Fig. 3: Time-dependent reflection anisotropy measurements of LSMO during the photoinduced phase transition.
From: Multi-mode excitation drives disorder during the ultrafast melting of a C4-symmetry-broken phase
a RA patterns as a function of pump-probe time delay for high (orange) and low (black) fluence. The radial axis runs from 1.63 to 2.015, with divisions every 0.05 (arb. units). b Ultrafast evolution of the normalized order parameter ƞ2 as a function of pump fluence which shows an ultrafast suppression. c Ultrafast evolution of the isotropic reflectivity r, showing a coherent phonon oscillations at 2.7 THz. d comparison of ƞ2 and r at 0.5 mJ cm−2 showing the 2.7 THz mode weakly modulates the RA signal. Supplementary Video 1 and Supplementary Video 2 show the RA pattern of each time delay for pump fluences of 1.5 and 8 mJ cm−2, respectively, together with the corresponding plots of r and ƞ2.
