Numerical simulation of thermodynamics in laser medium for heat capacity laser

The thermodynamic model was established for analyzing the temperature and the thermal stress in laser medium. The transient heat conduction equation is the base in the model. First, the longitudinal distribution of the heat deposition power density was got. It was loaded on the corresponding pumping part. The heat capacity, the thermal conductivity, the thermal expansion coefficient and the elastic modulus were fully considered. Thus the distribution and the variation of the temperature and the thermal stress were got. There were references for the experiment and design of heat capacity laser.