Figure 4.

Kinetics Traces in the Transmission Change ΔT/T along the a and b Axes

(A and B) (A) At 525 ± 18.0 and 599 ± 8.7 nm probing along the b axis and (B) at 525 ± 18.0 and 608 ± 9.0 nm probing along the a axis, under 795 nm with a pump polarization along the b axis. Global fittings of the kinetic traces to the two-step model described in the context yield the generation and dissociation rates for the ¹(T₁T₁) along the b axis (k_F,b = 4.5 ± 0.2 ps⁻¹, k_Q,b = 6.7 ± 0.2 ps⁻¹) and the a axis (k_F,a = 5.0 ± 0.2 ps⁻¹, k_Q,a = 3.3 ± 0.2 ps⁻¹), respectively. The instrumental response function was 130 fs.