Figure 3.

The experimental setup and model architecture. (a) An infrared laser is directed from below to heat the sample through a prism. Once thermal equilibrium is reached, an infrared microscope is used to record the temperature evolution on the up surface. The initial thermal field can be adjusted by changing the laser’s position. (b) The thermal diffusivity obtained from Fig. 2b is embedded into the TRO model. The bottom left and bottom right images show the thermal fields before and after passing through one module, respectively. The upper right image shows the correction term W.