Figure 2 | Scientific Reports

Figure 2

From: Thermal properties of thin films made from MoS2 nanoflakes and probed via statistical optothermal Raman method

Figure 2

(a) SEM image of the sample. The scale bar is equal to 500 nm. Inset: photographs of MoS2 thin films on Si/SiO2 and glass. (b) Dependence of the beam radius (blue) and average laser power density (orange) on the distance to the focal point. Beam radii associated with different distances were measured via the knife-edge technique. The fit (red line) follows the Gaussian beam radius dependence from Eq. (7). (c) Sample Raman spectra with two Lorentz curves and a linear background. (d) Examples of stability tests performed to estimate the laser-induced damage threshold. Blue (red) points correspond to stable (unstable) measurement conditions.

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