Figure 5
From: Two-color pump-probe interferometry of ultra-fast light-matter interaction
Phase of FFT images at 400 nm (a) and 800 nm (b) wavelengths at different pump pulse energies from E p = 10 nJ to 100 nJ. An arrow shows a characteristic transmission decrease at the end of laser pulse. Positive phase corresponds to the −Δn change of refractive index, and vice versa.
