Figure 5. 3D- FEM simulation of heat power irradiating on an achiral PCMM located at the beam center, where the solid red line presents the heat power irradiating on the structures for LCP incident light, the solid blue line presents the heat power irradiating on the structures for RCP incident light, the dash red line is the temperature of the amorphous Ge₂Sb₂Te₅ layer during one pulse for LCP incident light, the dash blue line is the temperature of amorphous Ge₂Sb₂Te₅ layer during one pulse for RCP incidence.