Figure 6
Kinetic model of light induced processes.
(a) A schematic diagram illustrating photogeneration of free carriers and their corresponding recombination paths. (b) Typical SAKs were fit with the model illustrated in (a) and described within the text. The differential equations applied are shown inside the graph and the fitting yields γ1 = 0.46, γ2 = 0.41 and k = 0.67 ns−1. (c) The kinetics acquired at 7305 nm, where the signal of free electrons prevails, under different excitation fluences. The solid lines present numerical fits of the kinetics using the first differential equation in (b). Inset is an enlargement of the kinetics acquired with 11 μJ/cm2 (4.4 × 1013 photon/cm2) excitation fluence.
