Figure 2
From: Coherent phonon control via electron-lattice interaction in ferromagnetic Co/Pt multilayers

(a) Time-resolved reflectance signals for (6.3-Å Co/ 9.3-Å Pt)n samples with n = 5, 10, 15. The red lines are LP-SVD fittings to the data. (b) Dependence of phonon oscillation and dephasing time on thickness, d. (c) Dependence of oscillation frequency on 1/d (circle). The error bars were taken from three independent measurements. The red line is a linear fit. The error bar is small enough that one may conclude that the oscillation frequency deviates from a linear dependence on 1/d.