Finite element method in analysis of laser window cooling androtating by vortex tube

By finiteelement method, the temperature field of SiO2 and Al2O3 have been studied, under the condition whether laser power density in dimension is equal and the window is cooled or not . From the calculation result, a conclusion can be drawn that whether the mirror is SiO2 or Al2O3 the window is cooling and rotating by the vortex tube is help for laser output．