In this numerical study, two separate strategies were proposed for the development of the simple geometrical models of unidirectional carbon fibre reinforced polymer (UD CFRP) and numerical simulation of KrF excimer laser ablation treatment of UD CFRP was done with those proposed models. Matrix polymer lamina and carbon fibre laminas were considered in Strategy 1, whereas in Strategy 2, intermediate lamina was also considered along with those aforementioned laminas. The temperature ranges obtained at the topmost surface after numerical simulation with Strategy 1 and Strategy 2 were 710.22 K–745.35 K and 709.60 K–744.73 K, respectively. However, the temperature ranges which were obtained at the lowest position of matrix polymer lamina were 329.12 K–330.45 K and 330.30 K–332.67 K after numerical simulation with Strategy 1 and Strategy 2, respectively. Comparing the obtained temperature range at the lowest position of the matrix polymer lamina, it was suggested that the performance of Strategy 2 was marginally better than Strategy 1. The experimental validation of the KrF laser ablation of UD CFRP was also done. The carbon fibres were visible after efficacious ablation of the first layer matrix polymer during experiment.